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bibcode stringlengths 19 19	title stringlengths 13 334	abstract stringlengths 103 2.97k ⌀	verified_uat_ids sequencelengths 1 12	verified_uat_labels sequencelengths 1 12
2020ApJ...891..100S	Dynamic Potential Sputtering of Lunar Analog Material by Solar Wind Ions	Pyroxenes ((Ca, Mg, Fe, Mn)<SUB>2</SUB>Si<SUB>2</SUB>O<SUB>6</SUB>) belong to the most abundant rock forming minerals that make up the surface of rocky planets and moons. Therefore, sputtering of pyroxenes by solar wind ions has to be considered as a very important process for modifying the surface of planetary bodies....	[ 1534, 499, 1692, 948, 1024, 2004 ]	[ "solar wind", "exosphere", "the moon", "lunar composition", "mercury (planet)", "laboratory astrophysics" ]
2024ApJ...966L...8B	Generation of Low-inclination, Neptune-crossing Trans-Neptunian Objects by Planet Nine	The solar system's distant reaches exhibit a wealth of anomalous dynamical structure, hinting at the presence of a yet-undetected, massive trans-Neptunian body—Planet Nine (P9). Previous analyses have shown how orbital evolution induced by this object can explain the origins of a broad assortment of exotic orbits, rang...	[ 1705, 1184, 2293 ]	[ "trans-neptunian objects", "orbits", "solar system evolution" ]
2024PSJ.....5...45C	Leveraging the Gravity Field Spectrum for Icy Satellite Interior Structure Determination: The Case of Europa with the Europa Clipper Mission	Understanding the interior structures of icy moons is pivotal for addressing their origins and habitability. We introduce an approach employing the gravity field spectrum as an additional constraint for the inversion of differentiated icy bodies' interior structures. After developing the general methodology, we apply i...	[ 2189, 1248, 770, 1889, 627, 1255 ]	[ "europa", "planetary interior", "hydrosphere", "markov chain monte carlo", "galilean satellites", "planetary science" ]
2022ApJ...932...52H	Inverse Multiview. I. Multicalibrator Inverse Phase Referencing for Microarcsecond Very Long Baseline Interferometry Astrometry	Very Long Baseline Interferometry (VLBI) astrometry is a well established technique for achieving ±10 μas parallax accuracies at frequencies well above 10 GHz. At lower frequencies, uncompensated interferometer delays associated with the ionosphere play the dominant role in limiting the astrometric accuracy. Multiview ...	[ 1769, 1337, 1713, 1295 ]	[ "very long baseline interferometry", "radio astrometry", "trigonometric parallax", "proper motions" ]
2024ApJS..271...25C	The First LHAASO Catalog of Gamma-Ray Sources	We present the first catalog of very-high-energy and ultra-high-energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory. The catalog was compiled using 508 days of data collected by the Water Cherenkov Detector Array from 2021 March to 2022 September and 933 days of data recorded by the Kilo...	[ 628, 632, 205 ]	[ "gamma-ray astronomy", "gamma-ray observatories", "catalogs" ]
2020ApJ...905...34H	The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required	The processes that shape the extended atmospheres of red supergiants, heat their chromospheres, create molecular reservoirs, drive mass loss, and create dust remain poorly understood. Betelgeuse's V-band "Great Dimming" event of 2019 September/2020 February and its subsequent rapid brightening provides a rare opportuni...	[ 988, 1584, 236, 1237, 2119 ]	[ "m supergiant stars", "stellar atmospheres", "circumstellar dust", "stellar photospheres", "atmospheric variability" ]
2021ApJS..255...21J	Infrared Surface Brightness Fluctuation Distances for MASSIVE and Type Ia Supernova Host Galaxies	We measured high-quality surface brightness fluctuation (SBF) distances for a sample of 63 massive early-type galaxies using the WFC3/IR camera on the Hubble Space Telescope. The median uncertainty on the SBF distance measurements is 0.085 mag, or 3.9% in distance. Achieving this precision at distances of 50-100 Mpc re...	[ 590, 394, 395, 456, 651, 915 ]	[ "galaxy distances", "distance indicators", "distance measure", "elliptical galaxies", "giant elliptical galaxies", "lenticular galaxies" ]
2020ApJ...892..108P	Iron Line Tomography of General Relativistic Hydrodynamic Accretion around Kerr Black Holes	We consider a temporal response of relativistically broadened line spectrum of iron from black hole accretion irradiated by an X-ray echo under strong gravity. The physical condition of accreting gas is numerically calculated in the context of general relativistic hydrodynamics under steady-state axisymmetry in Kerr ge...	[ 1447, 159, 739, 16, 293, 1963, 14, 1393 ]	[ "seyfert galaxies", "black hole physics", "high energy astrophysics", "active galactic nuclei", "computational astronomy", "hydrodynamics", "accretion", "relativity" ]
2022ApJ...937...85P	Changes in the Na D<SUB>1</SUB> Absorption Components of η Carinae Provide Clues on the Location of the Dissipating Central Occulter	The Na D absorption doublet in the spectrum of η Carinae is complex, with multiple absorption features associated with the Great Eruption (1840s), the Lesser Eruption (1890s), and the interstellar clouds. The velocity profile is further complicated by the P Cygni profile originating in the system's stellar winds and bl...	[ 732, 944, 154, 453, 241 ]	[ "massive stars", "luminous blue variable stars", "binary stars", "ejecta", "circumstellar matter" ]
2023ApJ...959..123B	Investigating APOKASC Red Giant Stars with Abnormal Carbon-to-nitrogen Ratios	The success of galactic archeology and the reconstruction of the formation history of our Galaxy relies critically on precise ages for large populations of stars. For evolved stars in the red clump and red giant branch, the carbon-to-nitrogen ratio ([C/N]) has recently been identified as a powerful diagnostic of mass a...	[ 4 ]	[ "a giant stars" ]
2024ApJ...970...51G	Expanded Sample of Small Magellanic Cloud Ultraviolet Dust Extinction Curves: Correlations between the 2175 Å Bump, q <SUB>PAH</SUB>, Ultraviolet Extinction Shape, and N(H I)/A(V)	The Small Magellanic Cloud (SMC) shows a large variation in ultraviolet (UV) dust extinction curves, ranging from Milky Way (MW) like to significantly steeper curves with no detectable 2175 Å bump. This result is based on a sample of only nine sight lines. From Hubble Space Telescope Space Telescope Imaging Spectrograp...	[ 836, 837, 1738, 1468 ]	[ "interstellar dust", "interstellar dust extinction", "ultraviolet extinction", "small magellanic cloud" ]
2020ApJS..250....9S	Lyα Radiative Transfer: Monte Carlo Simulation of the Wouthuysen-Field Effect	A three-dimensional Monte Carlo Lyα radiative transfer (RT) code, named LaRT, is developed to study the Lyα RT and the Wouthuysen-Field (WF) effect. Using the code, we calculate the line profile of Lyα radiation within the multiphase interstellar medium (ISM), with a particular emphasis on gas at low densities. We show...	[ 847, 1335, 1967, 1789, 690, 978 ]	[ "interstellar medium", "radiative transfer", "radiative transfer simulations", "warm neutral medium", "h i line emission", "lyman-alpha galaxies" ]
2024AJ....167..114S	Planetary Complexity Revealed by the Joint Differential Entropy of Eigencolors	We propose a measure, the joint differential entropy of eigencolors, for determining the spatial complexity of exoplanets using only spatially unresolved light-curve data. The measure can be used to search for habitable planets, based on the premise of a potential association between life and exoplanet complexity. We p...	[ 486, 498, 495, 2023, 695, 496, 2022 ]	[ "exoplanet astronomy", "exoplanets", "exoplanet structure", "exoplanet surface variability", "habitable planets", "exoplanet surface characteristics", "exoplanet surface composition" ]
2024ApJ...963...62G	A Quantum Mechanical Treatment of Electron Broadening in Strong Magnetic Fields. II. Large Enhancements due to Exchange Interactions	We present a quantum treatment of atom–electron collisions in magnetic fields, demonstrating the significant importance of including the effect of exchange that arises from two interacting electrons. We find strange behaviors that are not encountered in collisions without a magnetic field. In high magnetic fields, exch...	[ 1108, 2099, 2083 ]	[ "neutron stars", "atomic spectroscopy", "collisional broadening" ]
2023ApJ...959...78C	Strong Resemblance between Surface and Deep Zonal Winds inside Jupiter Revealed by High-degree Gravity Moments	Jupiter's atmosphere interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere features east-west zonal winds on the order of ~100 m s<SUP>-1</SUP>, zonal flows in the dynamo region are significantly slower, on the order of ~cm s<SUP>-1</SUP> or less...	[ 873, 1244, 1248, 667 ]	[ "jupiter", "planetary atmospheres", "planetary interior", "gravitational fields" ]
2020ApJ...890...46T	Superflares on Solar-type Stars from the First Year Observation of TESS	Superflares, which are strong explosions on stars, have been well studied with the progress of spacetime-domain astronomy. In this work, we present the study of superflares on solar-type stars using Transiting Exoplanet Survey Satellite (TESS) data. Thirteen sectors of observations during the first year of the TESS mis...	[ 1603, 558 ]	[ "stellar flares", "g stars" ]
2022PASP..134h4101B	Performance Assessment of the KASI-Deep Rolling Imaging Fast-optics Telescope Pathfinder	In a ΛCDM universe, most galaxies evolve by mergers and accretions, leaving faint and/or diffuse structures, such as tidal streams and stellar halos. Although these structures are a good indicator of galaxies' recent mass assembly history, they have the disadvantage of being difficult to observe due to their low surfac...	[ 1080, 1861, 573 ]	[ "multiple mirror telescopes", "astronomy data reduction", "galaxies" ]
2020ApJ...899L..24S	The Case for an Early Solar Binary Companion	We show that an equal-mass, temporary binary companion to the Sun in the solar birth cluster at a separation of ∼10<SUP>3</SUP> au would have increased the likelihood of forming the observed population of outer Oort Cloud objects and of capturing Planet Nine. In particular, the discovery of a captured origin for Planet...	[ 154, 1157 ]	[ "binary stars", "oort cloud" ]
2020ApJ...888...53L	Quasi-periodic Pulsations of Gamma-Ray Emissions from a Solar Flare on 2017 September 6	We investigate quasi-periodic pulsations (QPPs) of high-energy nonthermal emissions from an X9.3 flare (SOL2017-Sep-06T11:53), the most powerful flare since the beginning of solar cycle 24. The QPPs are identified as a series of regular and repeating peaks in the light curves in the γ- and hard X-ray (HXR) channels rec...	[ 1536, 1497, 1515, 1496, 1522 ]	[ "solar x-ray emission", "solar gamma-ray emission", "solar oscillations", "solar flares", "solar radio emission" ]
2022AJ....164..138S	Revising Properties of Planet-Host Binary Systems. II. Apparent Near-Earth-analog Planets in Binaries Are Often Sub-Neptunes	Identifying rocky planets in or near the habitable zones of their stars (near-Earth analogs) is one of the key motivations of many past and present planet-search missions. The census of near-Earth analogs is important because it informs calculations of the occurrence rate of Earth-like planets, which in turn feed into ...	[ 498, 1655, 1000, 154, 1777 ]	[ "exoplanets", "super earths", "main sequence stars", "binary stars", "visual binary stars" ]
2020ApJ...893...53A	Power-law Pseudo-phase-space Density Profiles of Dark Matter Halos: A Fluke of Physics?	It has been known for nearly 20 yr that the pseudo-phase-space density profile of equilibrium simulated dark matter halos, ρ(r)/σ<SUP>3</SUP>(r), is well described by a power law over three decades in radius, even though both the density ρ(r) and the velocity dispersion σ(r) deviate significantly from power laws. The o...	[ 353, 343, 354 ]	[ "dark matter", "cosmology", "dark matter density" ]
2023ApJ...952..128C	Breakdown of the Newton-Einstein Standard Gravity at Low Acceleration in Internal Dynamics of Wide Binary Stars	A gravitational anomaly is found at weak gravitational acceleration g <SUB>N</SUB> ≲ 10<SUP>-9</SUP> m s<SUP>-2</SUP> from analyses of the dynamics of wide binary stars selected from the Gaia DR3 database that have accurate distances, proper motions, and reliably inferred stellar masses. Implicit high-order multiplicit...	[ 154, 661, 1069, 1118 ]	[ "binary stars", "gravitation", "modified newtonian dynamics", "non-standard theories of gravity" ]
2021ApJ...916...14M	Realistic Dispersion of Plasmaspheric Hiss in the Inner Magnetosphere and Its Effect on Wave-induced Electron Scattering Rates	The cold plasma approximation is a common treatment to study wave-particle interactions between plasmaspheric hiss and magnetospheric electrons, which, however, can become a challenge during periods of disturbed geomagnetic activity. To assess the validity of the cold plasma dispersion relation of plasmaspheric hiss, w...	[ 1758, 997 ]	[ "van allen radiation belts", "planetary magnetospheres" ]
2022ApJ...940..116C	Evidence for Large-scale Excesses Associated with Low H I Column Densities in the Sky. I. Dust Excess	Where dust and gas are uniformly mixed, atomic hydrogen can be traced through the detection of far-infrared (FIR) or UV emission of dust. We considered, for the origin of discrepancies observed between various direct and indirect tracers of gas outside the Galactic plane, possible corrections to the zero levels of the ...	[ 847, 857, 412, 529, 1742 ]	[ "interstellar medium", "interstellar thermal emission", "dust continuum emission", "far infrared astronomy", "ultraviolet surveys" ]
2024AJ....168...55M	Image Deconvolution and Point-spread Function Reconstruction with STARRED: A Wavelet-based Two-channel Method Optimized for Light-curve Extraction	We present STARRED, a point-spread function (PSF) reconstruction, two-channel deconvolution, and light-curve extraction method designed for high-precision photometric measurements in imaging time series. An improved resolution of the data is targeted rather than an infinite one, thereby minimizing deconvolution artifac...	[ 1910, 1234, 918, 2306 ]	[ "deconvolution", "photometry", "light curves", "astronomy image processing" ]
2022ApJ...939....9M	A Comparison of Global Magnetofrictional Simulations of the 2015 March 20 Solar Eclipse	The solar corona exhibits a wide range of phenomena, from highly non-potential objects such as solar filaments to near-potential structures such as the open magnetic flux. For any global model to be useful in space weather applications, the model must on a single day reproduce all of these phenomena in the same simulat...	[ 1483, 1503, 1492, 1519 ]	[ "solar corona", "solar magnetic fields", "solar evolution", "solar prominences" ]
2020ApJ...894...67D	Spectroscopic and Asteroseismic Analysis of the Secondary Clump Red Giant HD 226808	In order to clarify the properties of the secondary clump star HD 226808 (KIC 5307747), we combined four years of data from Kepler space photometry with high-resolution spectroscopy of the High Efficiency and Resolution Mercator Échelle Spectrograph mounted on the Mercator telescope. The fundamental atmospheric paramet...	[ 1577, 2096, 1370, 73 ]	[ "stellar abundances", "high resolution spectroscopy", "red giant clump", "asteroseismology" ]
2024ApJ...963...60P	Discovery of Astrometric Accelerations by Dark Companions in the Globular Cluster ω Centauri	We present results from the search for astrometric accelerations of stars in ω Centauri using 13 yr of regularly scheduled Hubble Space Telescope WFC3/UVIS calibration observations in the cluster core. The high-precision astrometry of ∼160,000 sources was searched for significant deviations from linear proper motion. T...	[ 80, 656, 761, 756, 154, 1799, 1108, 162, 2360, 1543, 884 ]	[ "astrometry", "globular star clusters", "hubble space telescope", "hst photometry", "binary stars", "white dwarf stars", "neutron stars", "black holes", "gaia", "space observatories", "keplerian orbit" ]
2021ApJ...921..172Z	Confined and Eruptive Catastrophes of Solar Magnetic Flux Ropes Caused by Mass Loading and Unloading	It is widely accepted that coronal magnetic flux ropes are the core structures of large-scale solar eruptive activities, which have a dramatic impact on the solar-terrestrial system. Previous studies have demonstrated that varying magnetic properties of a coronal flux rope system could result in a catastrophe of the ro...	[ 1519, 1496, 1981, 310, 1495, 1475, 1321 ]	[ "solar prominences", "solar flares", "solar filament eruptions", "solar coronal mass ejections", "solar filaments", "solar activity", "quiescent solar prominence" ]
2021AJ....161..128S	Chemical Compositions of Red Giant Stars from Habitable Zone Planet Finder Spectroscopy	We have used the Habitable Zone Planet Finder (HPF) to gather high-resolution, high signal-to-noise near-infrared spectra of 13 field red horizontal branch (RHB) stars, one open cluster giant, and one very metal-poor halo red giant. The HPF spectra cover the 0.81-1.28 μm wavelength range of the zyJ bands, partially fil...	[ 224, 1031, 1093, 2099, 2048 ]	[ "chemical abundances", "metallicity", "near infrared astronomy", "atomic spectroscopy", "horizontal branch" ]
2024ApJ...970L..31H	Analyses of Johannes Kepler's Sunspot Drawings in 1607: A Revised Scenario for the Solar Cycles in the Early 17th Century	Telescopic sunspot observations began in 1610 and captured subsequent solar cycles. In combination with proxy reconstructions on an annual scale, these data sets indicate a gradual transition between regular solar cycles and the Maunder Minimum. The telescopic sunspot observations missed the beginning of the first tele...	[ 1651, 1650, 1653, 1487, 1015, 1473 ]	[ "sunspot groups", "sunspot cycle", "sunspots", "solar cycle", "maunder minimum", "solar-terrestrial interactions" ]
2021ApJ...922....2D	EPIC 228782059: Asteroseismology of What Could Be the Coolest Pulsating Helium-atmosphere White Dwarf (DBV) Known	We present analysis of a new pulsating helium-atmosphere (DB) white dwarf, EPIC 228782059, discovered from 55.1 days of K2 photometry. The long-duration, high-quality light curves reveal 11 independent dipole and quadruple modes, from which we derive a rotational period of 34.1 ± 0.4 hr for the star. An optimal model i...	[ 358, 1307, 1799, 73, 1234 ]	[ "db stars", "pulsating variable stars", "white dwarf stars", "asteroseismology", "photometry" ]
2023ApJ...948L..25P	X-Ray Polarization of BL Lacertae in Outburst	We report the first >99% confidence detection of X-ray polarization in BL Lacertae. During a recent X-ray/γ-ray outburst, a 287 ks observation (2022 November 27-30) was taken using the Imaging X-ray Polarimetry Explorer (IXPE), together with contemporaneous multiwavelength observations from the Neil Gehrels Swift ob...	[ 98, 159, 1663, 16, 17, 870, 601, 1390, 289, 1810 ]	[ "astrophysical black holes", "black hole physics", "supermassive black holes", "active galactic nuclei", "active galaxies", "jets", "galaxy jets", "relativistic jets", "compact radiation sources", "x-ray astronomy" ]
2020ApJ...888...46C	Upward Overshooting in Turbulent Compressible Convection. I. Effects of the Relative Stability Parameter, the Prandtl Number, and the Péclet Number	In this paper, we investigate the upward overshooting by three-dimensional numerical simulations. We find that the above convectively stable zone can be partitioned into three layers: the thermal adjustment layer (mixing both entropy and material), the turbulent dissipation layer (mixing material but not entropy), and ...	[ 301, 1631, 1606, 767, 1592 ]	[ "stellar convective zones", "stellar structures", "stellar interiors", "hydrodynamical simulations", "stellar cores" ]
2020RNAAS...4..211L	MASTER Follow-up Observations of LIGO GW170104 Event	We present the results of MASTER Global Robotic Net optical observations of the LIGO GW170104 error-box during the LIGO/Virgo O2 run. We observed 3421 square degrees inside 3σ error-field. Dozens of optical transients unrelated to gravitational waves were discovered as the result of MASTER observation strategy, that we...	[ 1957, 675, 1464, 122, 920 ]	[ "transient detection", "gravitational wave astronomy", "sky surveys", "automatic patrol telescopes", "ligo" ]
2021ApJ...912...44B	The Color and Brightness of the F-corona Inferred from the 2019 July 2 Total Solar Eclipse	Total solar eclipses (TSEs) provide a unique opportunity to quantify the properties of the K-corona (electrons), F-corona (dust), and E-corona (ions) continuously from the solar surface out to a few solar radii. We apply a novel inversion method to separate emission from the K- and F-corona continua using unpolarized t...	[ 1483, 1489, 1514 ]	[ "solar corona", "solar eclipses", "solar optical telescopes" ]
2024PSJ.....5....3S	Bioverse: The Habitable Zone Inner Edge Discontinuity as an Imprint of Runaway Greenhouse Climates on Exoplanet Demographics	Long-term magma ocean phases on rocky exoplanets orbiting closer to their star than the runaway greenhouse threshold-the inner edge of the classical habitable zone-may offer insights into the physical and chemical processes that distinguish potentially habitable worlds from others. The thermal stratification of runaway...	[ 696, 695, 74, 511, 2184, 487, 1857, 498, 1709, 1332, 1900, 1904 ]	[ "habitable zone", "habitable planets", "astrobiology", "extrasolar rocky planets", "planetary climates", "exoplanet atmospheres", "astronomical simulations", "exoplanets", "transit photometry", "radial velocity", "bayesian statistics", "parametric hypothesis tests" ]
2021ApJ...909...74M	The Dragonfly Wide Field Survey. II. Accurate Total Luminosities and Colors of Nearby Massive Galaxies and Implications for the Galaxy Stellar-mass Function	Stellar-mass estimates of massive galaxies are susceptible to systematic errors in their photometry, due to their extended light profiles. In this study, we use data from the Dragonfly Wide Field Survey to accurately measure the total luminosities and colors of nearby massive galaxies. The low surface brightness limits...	[ 611, 603, 586, 588 ]	[ "galaxy photometry", "galaxy luminosities", "galaxy colors", "galaxy counts" ]
2021ApJS..255....3A	Radiative Transfer with Opacity Distribution Functions: Application to Narrowband Filters	Modeling of stellar radiative intensities in various spectral passbands plays an important role in stellar physics. At the same time, direct calculation of the high-resolution spectrum and then integration of it over the given spectral passband is computationally demanding due to the vast number of atomic and molecular...	[ 1335, 1336, 1584, 1585, 486 ]	[ "radiative transfer", "radiative transfer equation", "stellar atmospheres", "stellar atmospheric opacity", "exoplanet astronomy" ]
2020ApJ...905...81E	Hubble Space Telescope Snapshot Survey for Resolved Companions of Galactic Cepheids: Final Results	Cepheids in multiple systems provide information on the outcome of the formation of massive stars. They can also lead to exotic end-stage objects. This study concludes our survey of 70 galactic Cepheids using the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) with images at two wavelengths to identify companio...	[ 1081, 818, 218, 1569 ]	[ "multiple stars", "intermediate-type stars", "cepheid variable stars", "star formation" ]
2023ApJ...946....5A	Three-dimensional Global Simulations of Type-II Planet-Disk Interaction with a Magnetized Disk Wind. I. Magnetic Flux Concentration and Gap Properties	Giant planets embedded in protoplanetary disks (PPDs) can create annulus density gaps around their orbits in the type-II regime, potentially responsible for the ubiquity of annular substructures observed in PPDs. Although a substantial amount of works studying type-II planetary migration and gap properties have been pu...	[ 1966, 1300, 1241, 2206, 2204, 767, 1579 ]	[ "magnetohydrodynamical simulations", "protoplanetary disks", "planet formation", "planetary migration", "planetary-disk interactions", "hydrodynamical simulations", "stellar accretion disks" ]
2020ApJS..248...13G	Energy Level Structure and Transition Data of Er<SUP>2+</SUP>	A majority of Er in the universe is synthesized by the r-process, which can occur in the mergers of neutron stars (NSs). The contribution of this element to the opacity of NS ejecta should be tested, but even the energy levels of first excited configuration have not been fully presented. The main aim of this paper is t...	[ 2099, 1335, 1585, 2074, 226, 1108 ]	[ "atomic spectroscopy", "radiative transfer", "stellar atmospheric opacity", "transition probabilities", "chemically peculiar stars", "neutron stars" ]
2023ApJ...956..110C	Discovery of the Magellanic Stellar Stream Out to 100 kpc	The Magellanic Stream (MS)-an enormous ribbon of gas spanning 140° of the southern sky trailing the Magellanic Clouds-has been exquisitely mapped in the five decades since its discovery. However, despite concerted efforts, no stellar counterpart to the MS has been conclusively identified. This stellar stream would reve...	[ 903, 990, 991, 1468, 2166 ]	[ "large magellanic cloud", "magellanic clouds", "magellanic stream", "small magellanic cloud", "stellar streams" ]
2024RNAAS...8...82G	Classifying Emission-line Galaxies Using a Dense Neural Network and Support Vector Machine	In this study we present an innovative approach to classifying emission-line galaxies, specifically categorizing them as Star-forming, Seyfert, Low Ionization Nuclear Emission Line Regions, or Composites. Leveraging both a Dense Neural Network and Support Vector Machine, we use key emission-line flux ratios as input fe...	[ 2171, 459, 1907, 1936, 1933 ]	[ "galaxy spectroscopy", "emission line galaxies", "classification", "support vector machine", "neural networks" ]
2023AJ....165...37L	A Census of the Taurus Star-forming Region and Neighboring Associations with Gaia	I have used high-precision photometry and astrometry from the third data release of Gaia to perform a survey for members of the Taurus star-forming region and young associations in its vicinity. This work has produced a new catalog of 532 adopted members of Taurus, which has only minor changes relative to the previous ...	[ 1565, 1582, 1140, 235, 796, 1300, 2050 ]	[ "star forming regions", "stellar associations", "ob associations", "circumstellar disks", "initial mass function", "protoplanetary disks", "low mass stars" ]
2020ApJ...901L..25S	OGLE-GAL-ACEP-091: The First Known Multi-mode Anomalous Cepheid	Anomalous Cepheids (ACs) are metal-deficient, core-helium-burning pulsating stars with masses in the range 1.2-2.2 ${M}_{\odot }$ . Until recently, all known ACs were pure single-mode pulsators. The first candidate for an AC pulsating in more than one radial mode—OGLE-GAL-ACEP-091—was recently identified in the Milky W...	[ 2106, 1078, 1307 ]	[ "anomalous cepheid variable stars", "multi-periodic pulsation", "pulsating variable stars" ]
2023ApJ...945..134B	Constraining a Model of the Radio Sky below 6 MHz Using the Parker Solar Probe/FIELDS Instrument in Preparation for Upcoming Lunar-based Experiments	We present a Bayesian analysis of data from the FIELDS instrument on board the Parker Solar Probe (PSP) spacecraft with the aim of constraining low-frequency (≲6 MHz) sky in preparation for several upcoming lunar-based experiments. We utilize data recorded during PSP's coning roll maneuvers, in which the axis of the sp...	[ 1338, 1858, 1900, 1894, 343, 856, 831 ]	[ "radio astronomy", "astronomy data analysis", "bayesian statistics", "nested sampling", "cosmology", "interstellar synchrotron emission", "interstellar absorption" ]
2021ApJ...912L..25J	Raining in MKW 3 s: A Chandra-MUSE Analysis of X-Ray Cold Filaments around 3CR 318.1	We present the analysis of X-ray and optical observations of gas filaments observed in the radio source 3CR 318.1, associated with NGC 5920, the brightest cluster galaxy (BCG) of MKW 3 s, a nearby cool core galaxy cluster. This work is one of the first X-ray and optical analyses of filaments in cool core clusters carri...	[ 16, 2134, 584, 302 ]	[ "active galactic nuclei", "radio active galactic nuclei", "galaxy clusters", "cool cores" ]
2022ApJ...940..164C	An Atmospheric Retrieval of the Brown Dwarf Gliese 229B	We present results from an atmospheric retrieval analysis of Gl 229B using the Brewster retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval work of Line et al.; Zalesky et al. and Gonzales et al. Fundamental parameters (mass, radius, log(L <SUB>Bol</SUB> /L <SUB>Sun</SUB>)...	[ 185, 2120, 291, 555, 1679, 982 ]	[ "brown dwarfs", "atmospheric composition", "companion stars", "fundamental parameters of stars", "t dwarfs", "m dwarf stars" ]
2023PSJ.....4....2B	TNO or Comet? The Search for Activity and Characterization of Distant Object 418993 (2009 MS9)	The perihelion of the trans-Neptunian object (TNO) 2009 MS9 brings it close to the distance where some long-period comets are seen to become active. Knowing this, and the fact that this object appears to brighten in excess of its predicted nucleus brightness, suggests that 2009 MS9 has a delayed onset of activity broug...	[ 2160, 2161, 2162, 1705 ]	[ "comet nuclei", "comet surfaces", "comet volatiles", "trans-neptunian objects" ]
2020ApJ...903...65K	Compact Elliptical Galaxies in Different Local Environments: A Mixture of Galaxies with Different Origins?	We present the stellar populations of 138 compact elliptical galaxies (cEs) in the redshift range of z < 0.05 using the Sloan Digital Sky Survey (SDSS) DR12. Our cEs are divided into those with [cE(w)] and without [cE(w/o)] a bright (M<SUB>r</SUB> < -21 mag) host galaxy. We investigated the stellar population pro...	[ 288, 285, 281, 456, 594, 595, 1699, 1622 ]	[ "compact objects", "compact galaxies", "compact dwarf galaxies", "elliptical galaxies", "galaxy evolution", "galaxy formation", "tidal interaction", "stellar populations" ]
2023ApJ...956...57C	Interstellar Carbonaceous Dust Erosion Induced by X-Ray Irradiation of Water Ice in Star-forming Regions	The chemical inventory of protoplanetary midplanes is the basis for forming planetesimals. Among them, solid-state reactions based on CO/CO<SUB>2</SUB> toward molecular complexity on interstellar dust grains have been studied in theoretical and laboratory work. The physicochemical interactions between ice, constituted ...	[ 2268, 75, 838, 2004, 201, 849 ]	[ "dust destruction", "astrochemistry", "interstellar dust processes", "laboratory astrophysics", "carbonaceous grains", "interstellar molecules" ]
2022RNAAS...6..155P	Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec	Using a data-driven machine learning tool we report T <SUB>eff</SUB>, $\mathrm{log}(g)$ , $v\sin (i)$ , and elemental abundances for 15 elements (C, N, O, Na, Mg, Al, Si, Ca, Ti, V, Cr, Mn, Fe, Ni, Y) for a sample of 25 exoplanet host stars targeted by JWST's first year of observations. The chemical diversity of these ...	[ 224, 2096, 486, 2021, 2130 ]	[ "chemical abundances", "high resolution spectroscopy", "exoplanet astronomy", "exoplanet atmospheric composition", "astrometric exoplanet detection" ]
2020ApJ...897...23F	Kinematics of the Magellanic Stream and Implications for Its Ionization	The Magellanic Stream and the Leading Arm form a massive, filamentary system of gas clouds surrounding the Large and Small Magellanic Clouds. Here we present a new component-level analysis of their ultraviolet (UV) kinematic properties using a sample of 31 sightlines through the Magellanic System observed with the Hubb...	[ 735, 594, 565, 991, 1879, 1054, 1052 ]	[ "high-velocity clouds", "galaxy evolution", "galactic center", "magellanic stream", "circumgalactic medium", "milky way galaxy", "milky way evolution" ]
2022ApJ...936...44Z	A Uniform Retrieval Analysis of Ultra-cool Dwarfs. IV. A Statistical Census from 50 Late-T Dwarfs	The spectra of brown dwarfs are key to exploring the chemistry and physics that take place in their atmospheres. Late-T dwarf spectra are particularly diagnostic, due to their relatively cloud-free atmospheres and deep molecular bands. With the use of powerful atmospheric retrieval tools applied to the spectra of these...	[ 1679, 2120, 1042, 1031, 185, 1900 ]	[ "t dwarfs", "atmospheric composition", "methane", "metallicity", "brown dwarfs", "bayesian statistics" ]
2024ApJ...962...21Z	Cosmic Tidal Reconstruction in Redshift Space	Gravitational coupling between large- and small-scale density perturbations leads to anisotropic distortions to local small-scale matter fluctuations. Such local anisotropic distortions can be used to reconstruct large-scale matter distribution, known as tidal reconstruction. In this paper, we apply the tidal reconstru...	[ 343, 902, 1116 ]	[ "cosmology", "large-scale structure of the universe", "non-gaussianity" ]
2023PSJ.....4...28G	Analysis of CN Coma Morphology Features of Comet 21P/Giacobini-Zinner	We analyze jet features found in the coma of comet 21P/Giacobini-Zinner (21P/GZ) during its 2018 perihelion passage using narrowband CN photometric imaging in order to determine the comet's rotational period, and we constrain the CN gas outflow velocity and rotational state through the analysis of azimuthally enhanced ...	[ 1211, 1959, 1452, 280, 2213 ]	[ "period determination", "lomb-scargle periodogram", "short period comets", "comets", "comet dynamics" ]
2020ApJ...901L..32F	An Upper Limit on the Spin of SgrA* Based on Stellar Orbits in Its Vicinity	The spin of the massive black hole (BH) at the center of the Milky Way, SgrA, has been poorly constrained so far. We place an upper limit on the spin of SgrA based on the spatial distribution of the S-stars, which are arranged in two almost edge-on disks that are located at a position angle of approximately ±45° with...	[ 98, 159, 886, 1663, 565, 1421 ]	[ "astrophysical black holes", "black hole physics", "kerr black holes", "supermassive black holes", "galactic center", "s stars" ]
2024ApJ...970...68L	Efficient NIRCam Selection of Quiescent Galaxies at 3 < z < 6 in CEERS	Substantial populations of massive quiescent galaxies at z ≥ 3 challenge our understanding of rapid galaxy growth and quenching over short timescales. In order to piece together this evolutionary puzzle, more statistical samples of these objects are required. Established techniques for identifying massive quiescent gal...	[ 2016, 734, 1724 ]	[ "quenched galaxies", "high-redshift galaxies", "two-color diagrams" ]
2023ApJ...952...63G	Magnetic Activity-Rotation-Age-Mass Relations in Late-pre-main-sequence Stars	We study the four-dimensional relationships between magnetic activity, rotation, mass, and age for solar-type stars in the age range 5-25 Myr. This is the late-pre-main-sequence (l-PMS) evolutionary phase when rapid changes in a star's interior may lead to changes in the magnetic dynamo mechanisms. We carefully derive ...	[ 1290, 1629, 1461, 1823, 1300, 1610 ]	[ "pre-main sequence stars", "stellar rotation", "single x-ray stars", "x-ray stars", "protoplanetary disks", "stellar magnetic fields" ]
2020AJ....159....9H	HD 150382: A Lithium-rich Star at the Early-AGB Stage?	We report the discovery of a lithium-rich giant, HD 150382, a post-red-giant-branch clump star. The atmospheric parameters, the chemical abundances for 17 elements, and the isotopic ratio <SUP>12</SUP>C/<SUP>13</SUP>C were determined using the equivalent width and the spectral synthesis methods. The lithium abundance w...	[ 927, 226, 4, 2100, 2096 ]	[ "lithium stars", "chemically peculiar stars", "a giant stars", "asymptotic giant branch stars", "high resolution spectroscopy" ]
2020ApJ...895...13G	Does Modified Gravity Predict Fast Stellar Bars in Spiral Galaxies?	The evolution of disk galaxies in modified gravity is studied by using high-resolution N-body simulations. More specifically, we use the weak field limit of two modified gravity theories, that is, nonlocal gravity and scalar-tensor-vector gravity, known as MOG, and ignore the existence of a dark matter (DM) halo. We co...	[ 1560, 391, 594, 1428, 1118 ]	[ "spiral galaxies", "disk galaxies", "galaxy evolution", "scalar-tensor-vector gravity", "non-standard theories of gravity" ]
2022AJ....163..202G	PetroFit: A Python Package for Computing Petrosian Radii and Fitting Galaxy Light Profiles	PetroFit is an open-source Python package based on Astropy and Photutils that can calculate Petrosian profiles and fit galaxy images. It offers end-to-end tools for making accurate photometric measurements, estimating morphological properties, and fitting 2D models to galaxy images. Petrosian metric radii can be used f...	[ 1855, 208, 1914, 573 ]	[ "astronomy software", "ccd photometry", "regression", "galaxies" ]
2020ApJ...890..107M	Internal Structure and CO<SUB>2</SUB> Reservoirs of Habitable Water Worlds	Water worlds are water-rich (>1 wt% H<SUB>2</SUB>O) exoplanets. The classical models of water worlds considered layered structures determined by the phase boundaries of pure water. However, water worlds are likely to possess comet-like compositions, with between ∼3 and 30 mol% CO<SUB>2</SUB> relative to water. In th...	[ 1248, 1151, 196, 695, 498, 1150, 770 ]	[ "planetary interior", "ocean planets", "carbon dioxide", "habitable planets", "exoplanets", "ocean-atmosphere interactions", "hydrosphere" ]
2023AJ....165..142K	Multifilter Time-series Observations of Eleven Blue Short-period ATLAS Variable Stars	Eleven periodic variable stars were observed photometrically through two to four filters from the set UBVR <SUB> C </SUB> I <SUB> C </SUB>. Phase-folded data for each star cover full cycles of variation. Spectral energy distributions, based on absolute photometry extracted from the literature, are used to inform models...	[ 2054, 254, 1761 ]	[ "subdwarf stars", "close binary stars", "variable stars" ]
2021PSJ.....2...39D	Constraining the Positive Ion Composition in Saturn's Lower Ionosphere with the Effective Recombination Coefficient	The present study combines Radio and Plasma Wave Science/Langmuir Probe and Ion and Neutral Mass Spectrometer data from Cassini's last four orbits into Saturn's lower ionosphere to constrain the effective recombination coefficient α<SUB>300</SUB> from measured number densities and electron temperatures at a reference e...	[ 1255, 1426, 1544, 2072 ]	[ "planetary science", "saturn", "space plasmas", "recombination" ]
2022ApJ...927..128B	On the Spectral Evolution of Hot White Dwarf Stars. II. Time-dependent Simulations of Element Transport in Evolving White Dwarfs with STELUM	White dwarf stars are subject to various element transport mechanisms that can cause their surface composition to change radically as they cool, a phenomenon known as spectral evolution. In this paper, we undertake a comprehensive theoretical investigation of the spectral evolution of white dwarfs. First, we introduce ...	[ 1799, 1593, 299, 2046, 1636 ]	[ "white dwarf stars", "stellar diffusion", "stellar convection envelopes", "stellar evolutionary models", "stellar winds" ]
2021ApJ...907...69L	New Ritz Wavelengths and Transition Probabilities of Parity-forbidden [Mn II] Lines of Astrophysical Interest	We report a comprehensive list of accurate Ritz wavelengths and calculated transition probabilities for parity-forbidden [Mn II] lines. Ritz wavelengths have been derived from experimentally established energy level values resulting from an extensive analysis of a high-resolution Fourier-transform emission spectrum of ...	[ 2064, 2063, 2085, 2082, 2084, 2004, 2093, 2096, 2099 ]	[ "atomic data benchmarking", "atomic physics", "line positions", "spectral line lists", "line intensities", "laboratory astrophysics", "theoretical techniques", "high resolution spectroscopy", "atomic spectroscopy" ]
2022ApJ...929..127M	Evolution of Primordial Magnetic Fields during Large-scale Structure Formation	Primordial magnetic fields (PMFs) could explain the large-scale magnetic fields present in the universe. Inflation and phase transitions in the early universe could give rise to such fields with unique characteristics. We investigate the magnetohydrodynamic evolution of these magnetogenesis scenarios with cosmological ...	[ 1966, 902, 813, 1294 ]	[ "magnetohydrodynamical simulations", "large-scale structure of the universe", "intergalactic medium", "primordial magnetic fields" ]
2023ApJ...948L..11M	High Tide or Riptide on the Cosmic Shoreline? A Water-rich Atmosphere or Stellar Contamination for the Warm Super-Earth GJ 486b from JWST Observations	Planets orbiting M-dwarf stars are prime targets in the search for rocky exoplanet atmospheres. The small size of M dwarfs renders their planets exceptional targets for transmission spectroscopy, facilitating atmospheric characterization. However, it remains unknown whether their host stars' highly variable extreme-UV ...	[ 487, 2021, 2133, 1861, 1244, 1791, 1601, 1584, 2285 ]	[ "exoplanet atmospheres", "exoplanet atmospheric composition", "transmission spectroscopy", "astronomy data reduction", "planetary atmospheres", "water vapor", "stellar faculae", "stellar atmospheres", "infrared spectroscopy" ]
2023ApJ...959L..28N	A Primordial Origin for the Gas-rich Debris Disks around Intermediate-mass Stars	While most debris disks consist of dust with little or no gas, a fraction have significant amounts of gas detected via emission lines of CO, ionized carbon, and/or atomic oxygen. Almost all such gaseous debris disks known are around A-type stars with ages up to 50 Myr. We show, using semianalytic disk evolution modelin...	[ 1300, 363, 1599, 2170, 492, 847, 5 ]	[ "protoplanetary disks", "debris disks", "stellar evolution", "extreme ultraviolet astronomy", "exoplanet formation", "interstellar medium", "a stars" ]
2020RNAAS...4...52M	Gaia DR2 Color-Temperature Relations Based on Infrared Flux Method Results	The ESA/Gaia mission is providing accurate and precise all-sky photometry. We combined effective temperatures derived, for a sample of dwarf and giant stars, by Gonzalez Hernandez \& Bonifacio (2009) using the Infrared Flux Method, with the photometry available from the second release of the ESA/Gaia mission. We pr...	[ 1584, 1597 ]	[ "stellar atmospheres", "stellar effective temperatures" ]
2023AJ....166...48D	The Orbital Eccentricities of Directly Imaged Companions Using Observable-based Priors: Implications for Population-level Distributions	The eccentricity of a substellar companion is an important tracer of its formation history. Directly imaged companions often present poorly constrained eccentricities. A recently developed prior framework for orbit fitting called "observable-based priors" has the advantage of improving biases in derived orbit parameter...	[ 492, 185, 1175, 1177, 509, 1900 ]	[ "exoplanet formation", "brown dwarfs", "orbit determination", "orbital elements", "extrasolar gaseous giant planets", "bayesian statistics" ]
2023ApJS..264...11P	On the General Correlation between 3D Solar Wind Speed and Density Model and Solar Proxies	The solar wind (SW) is a supersonic outflow of plasma from the solar corona, with the latitudinal speed and density profiles varying with the solar activity. The SW protons charge exchange with the inflowing interstellar neutral atoms and create energetic neutral atoms (ENAs), which bring information on the physical st...	[ 1872, 1873, 1476, 1534, 1475, 1580, 711, 106 ]	[ "fast solar wind", "slow solar wind", "solar physics", "solar wind", "solar activity", "stellar activity", "heliosphere", "astrosphere interstellar medium interactions" ]
2020ApJ...895...54C	Digging for Relics of the Past: The Ancient and Obscured Bulge Globular Cluster NGC 6256	We used a set of moderately deep and high-resolution optical observations obtained with the Hubble Space Telescope to investigate the properties of the stellar population in the heavily obscured bulge globular cluster (GC) NGC 6256. The analysis of the color-magnitude diagram (CMD) revealed a stellar population with an...	[ 656, 578, 1054, 2041, 1052, 1053, 756, 1889, 1883, 853, 841 ]	[ "globular star clusters", "galaxy bulges", "milky way galaxy", "galactic bulge", "milky way evolution", "milky way formation", "hst photometry", "markov chain monte carlo", "algorithms", "interstellar reddening", "interstellar extinction" ]
2022AJ....164..141W	SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-sky Surface-brightness Measurements. I. Survey Overview and Methods	We give an overview and describe the rationale, methods, and testing of the Hubble Space Telescope (HST) Archival Legacy project "SKYSURF." SKYSURF uses HST's unique capability as an absolute photometer to measure the ~0.2-1.7 μm sky-surface brightness (sky-SB) from 249,861 WFPC2, ACS, and WFC3 exposures in ~1400 indep...	[ 761, 1845, 317, 588, 1568 ]	[ "hubble space telescope", "zodiacal cloud", "cosmic background radiation", "galaxy counts", "star counts" ]
2024ApJ...968...79L	New Galaxy UV Luminosity Constraints on Warm Dark Matter from JWST	We exploit the recent James Webb Space Telescope (JWST) determination of galaxy UV luminosity functions over the redshift range z = 9–14.5 to derive constraints on warm dark matter (WDM) models. The delayed structure formations in WDM universes make high-redshift observations a powerful probe to set limits on the parti...	[ 1787, 942 ]	[ "warm dark matter", "luminosity function" ]
2020AJ....159..277W	A Numerical Method for Determining the Elements of Circumbinary Orbits and Its Application to Circumbinary Planets and the Satellites of Pluto-Charon	Planets and satellites orbiting a binary system exist in the solar system and extrasolar planetary systems. Their orbits can be significantly different from Keplerian orbits, if they are close to the binary and the secondary-to-primary mass ratio is high. A proper description of a circumbinary orbit is in terms of the ...	[ 154, 211, 1177, 490, 498, 1089, 1267 ]	[ "binary stars", "celestial mechanics", "orbital elements", "exoplanet dynamics", "exoplanets", "natural satellites (solar system)", "pluto" ]
2024ApJ...965...97M	The Diffusion Limit of Photoevaporation in Primordial Planetary Atmospheres	Photoevaporation is thought to play an important role in early planetary evolution. In this study, we investigate the diffusion limit of X-ray- and ultraviolet-induced photoevaporation in primordial atmospheres. We find that compositional fractionation resulting from mass loss is more significant than currently recogni...	[ 2300, 2309, 22 ]	[ "atmospheric dynamics", "atmospheric structure", "aeronomy" ]
2023PSJ.....4...22L	Subsurface Science and Search for Life in Ocean Worlds	Several worlds in our solar system are thought to hold oceans of liquid water beneath their frozen surfaces. These subsurface ice and ocean environments are promising targets in the search for life beyond Earth, but they also present significant new technical challenges to planetary exploration. With a focus on Jupiter...	[ 2189, 74, 1252 ]	[ "europa", "astrobiology", "planetary probes" ]
2021RNAAS...5....8Z	Evidence of Increased Macroturbulence for Betelgeuse during Great Dimming	We compared high-resolution spectra of Betelgeuse observed before and during the Great Dimming. Atomic lines are shallow and broad during the Great Dimming presumably because of molecular veiling and increased macroturbulence, ν<SUB>macro</SUB> ≳ 23 km s<SUP>-1</SUP>. The best fit for TiO bands was found for the MARCS ...	[ 988, 1584, 1624, 2096 ]	[ "m supergiant stars", "stellar atmospheres", "stellar properties", "high resolution spectroscopy" ]
2023ApJ...945L..16M	Prospective Implications of Extreme-ultraviolet Coronal Plumes for Magnetic-network Genesis of Coronal Heating, Coronal-hole Solar Wind, and Solar-wind Magnetic Field Switchbacks	We propose that coronal heating in EUV coronal plumes is weaker, not stronger, than in adjacent nonplume coronal magnetic funnels. This expectation stems from (i) the observation that an EUV plume is born as the magnetic flux at the foot of the plume's magnetic funnel becomes tightly packed, and (ii) the observation th...	[ 2039, 1989, 1534, 1493, 1484 ]	[ "solar coronal plumes", "solar coronal heating", "solar wind", "solar extreme ultraviolet emission", "solar coronal holes" ]
2021ApJ...915...87S	Dissecting the Size-Mass and Σ<SUB>1</SUB>-Mass Relations at 1.0 < z < 2.5: Galaxy Mass Profiles and Color Gradients as a Function of Spectral Shape	We study how half-mass radii, central mass densities (Σ<SUB>1</SUB>), and color gradients change as galaxies evolve. We separate ~7000 galaxies into 16 groups with similar spectral shapes; each group represents a different evolutionary stage. We find that different galaxy types populate different regions of both size-m...	[ 594, 622, 2040, 2176, 683, 285 ]	[ "galaxy evolution", "galaxy structure", "galaxy quenching", "post-starburst galaxies", "green valley galaxies", "compact galaxies" ]
2023PSJ.....4...45R	The Distribution of Molecular Water in the Lunar South Polar Region Based upon 6 μm Spectroscopic Imaging	The amount and distribution of water on the lunar surface are related to the input and production of water by solar wind and meteoroid bombardment, balanced by photodestruction and mobility across the surface. Using the Stratospheric Observatory for Infrared Astronomy (SOFIA), we imaged the 6.1 μm feature that uniquely...	[ 436, 948, 974 ]	[ "earth-moon system", "lunar composition", "lunar surface" ]
2020ApJ...899....6M	Connecting 3D Evolution of Coronal Mass Ejections to Their Source Regions	Since coronal mass ejections (CMEs) are the major drivers of space weather, it is crucial to study their evolution starting from the inner corona. In this work we use graduated cylindrical shell model to study the 3D evolution of 59 CMEs in the inner (<3 R<SUB>⊙</SUB>) and outer (>3 R<SUB>⊙</SUB>) corona using ob...	[ 1483, 310, 1974, 1977, 1321 ]	[ "solar corona", "solar coronal mass ejections", "solar active regions", "solar active region filaments", "quiescent solar prominence" ]
2024ApJ...970...45K	Importance of Initial Condition on Bar Secular Evolution: Role of Halo Angular Momentum Distribution Discontinuity	The dark matter halo properties, for example, mass, spin, and concentration, play a significant role in the formation and evolution of bars in disk galaxies. This study highlights the importance of a new parameter: the dark matter halo angular momentum distribution in the disk's central region. We experiment with N-bod...	[ 136, 2364, 1965, 1083, 1880, 591 ]	[ "barred spiral galaxies", "galaxy bars", "computational methods", "n-body simulations", "galaxy dark matter halos", "galaxy dynamics" ]
2023ApJS..268....8K	Type Ia Supernova Nucleosynthesis: Metallicity-dependent Yields	Type Ia supernova explosions (SN Ia) are fundamental sources of elements for the chemical evolution of galaxies. They efficiently produce intermediate-mass (with Z between 11 and 20) and iron group elements-for example, about 70% of the solar iron is expected to be made by SN Ia. In this work, we calculate complete abu...	[ 1728, 1131, 100, 1129 ]	[ "type ia supernovae", "nucleosynthesis", "astrophysical explosive burning", "nuclear astrophysics" ]
2022ApJ...935..162K	Resolving the Core of R136 in the Optical	The sharpest optical images of the R136 cluster in the Large Magellanic Cloud are presented, allowing us for the first time to resolve members of the central core, including R136a1, the most-massive star known. These data were taken using the Gemini speckle imager Zorro in medium-band filters with effective wavelengths...	[ 732, 1569, 1805, 1552 ]	[ "massive stars", "star formation", "wn stars", "speckle interferometry" ]
2020AJ....159..214F	A Multiwavelength Search for Intrinsic Linear Polarization in Wolf-Rayet Winds	Wolf-Rayet stars have strong, hot winds, with mass-loss rates at least a factor of 10 greater than their O-star progenitors, although their terminal wind speeds are similar. In this paper, we use the technique of multiband linear polarimetry to extract information on the global asymmetry of the wind in a sample of 47 b...	[ 1806, 154, 1278, 1671, 90, 732 ]	[ "wolf-rayet stars", "binary stars", "polarimetry", "surveys", "astronomical reference materials", "massive stars" ]
2022ApJ...928..146L	Signatures of a Surviving Helium-star Companion in Type Ia Supernovae and Constraints on the Progenitor Companion of SN 2011fe	Single-degenerate (SD) binary systems composed of a white dwarf and a nondegenerate helium (He)-star companion have been proposed as the potential progenitors of Type Ia supernovae (SNe Ia). The He-star companions are expected to survive the SN Ia explosion in this SD progenitor model. In the present work, we map the s...	[ 1728, 767, 254, 1599, 715, 291 ]	[ "type ia supernovae", "hydrodynamical simulations", "close binary stars", "stellar evolution", "helium-rich stars", "companion stars" ]
2023ApJ...950...82H	Using Dark Energy Explorers and Machine Learning to Enhance the Hobby-Eberly Telescope Dark Energy Experiment	We present analysis using a citizen science campaign to improve the cosmological measures from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX is to measure the Hubble expansion rate, H(z), and angular diameter distance, D <SUB>A</SUB>(z), at z = 2.4, each to percent-level accuracy. This ...	[ 343, 339, 2165, 351 ]	[ "cosmology", "cosmological parameters", "astronomy education", "dark energy" ]
2022AJ....164..245S	Weak Lensing in the Blue: A Counter-intuitive Strategy for Stratospheric Observations	The statistical power of weak lensing measurements is principally driven by the number of high-redshift galaxies whose shapes are resolved. Conventional wisdom and physical intuition suggest this is optimized by deep imaging at long (red or near-IR) wavelengths, to avoid losing redshifted Balmer-break and Lyman-break g...	[ 670, 584, 583, 738, 1145, 923, 1797 ]	[ "gravitational lensing", "galaxy clusters", "galaxy cluster counts", "high altitude balloons", "observational astronomy", "limiting magnitude", "weak gravitational lensing" ]
2024AJ....167..260W	Classification of Astronomical Spectra Based on Multiscale Partial Convolution	The automated and efficient classification of astronomical spectra is an important research issue in the era of large sky surveys. Most current studies on automatic spectral classification primarily focus on specific data sets and demonstrate outstanding performance. However, the diversity in spectra poses formidable c...	[ 1938, 253, 1858, 1671 ]	[ "convolutional neural networks", "classification systems", "astronomy data analysis", "surveys" ]
2023ApJ...956...88L	Connection between Polytropic Index and Heating	The paper derives the one-to-one connecting relationships between plasma heating and its polytropic index, and addresses the consequences through the transport equation of temperature. Thermodynamic polytropic processes are classified in accordance to their polytropic index, the exponent of the power-law relationship o...	[ 1544, 1281, 711 ]	[ "space plasmas", "polytropes", "heliosphere" ]
2020ApJ...897..147L	Toward a General Parameterization of the Warm Dark Matter Halo Mass Function	Studies of flux anomalies statistics and perturbations in stellar streams have the potential to constrain models of warm dark matter (WDM), including sterile neutrinos. Producing these constraints requires a parameterization of the WDM mass function relative to that of the cold dark matter (CDM) equivalent. We use five...	[ 1787 ]	[ "warm dark matter" ]
2023ApJ...945..151T	Ambipolar Heating of Magnetars	Magnetars, neutron stars thought to be with ultrastrong magnetic fields of 10<SUP>14-15</SUP> G, are observed to be much hotter than ordinary pulsars with ~10<SUP>12</SUP> G, and additional heating sources are required. One possibility is heating by the ambipolar diffusion in the stellar core. This scenario is examined...	[ 992, 1823, 367, 1108 ]	[ "magnetars", "x-ray stars", "degenerate matter", "neutron stars" ]
2022AJ....163..273E	HD 83443c: A Highly Eccentric Giant Planet on a 22 yr Orbit	We report the discovery of a highly eccentric long-period Jovian planet orbiting the hot-Jupiter host HD 83443. By combining radial velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS, Minerva-Australis) spanning more than two decades, we find evidence for a planet with m sin $i={1.35}_{-0.06}^{+0.07}$ M ...	[ 1242, 1332, 486, 490, 1646, 80 ]	[ "planet hosting stars", "radial velocity", "exoplanet astronomy", "exoplanet dynamics", "subgiant stars", "astrometry" ]
2021ApJ...916..110L	The Detectability of Kiloparsec-scale Dual Active Galactic Nuclei: The Impact of Galactic Structure and Black Hole Orbital Properties	Observational searches for dual active galactic nuclei (dAGNs) at kiloparsec separations are crucial for understanding the role of galaxy mergers in the evolution of galaxies. In addition, kiloparsec-scale dAGNs may serve as the parent population of merging massive black hole (MBH) binaries, an important source of grav...	[ 422, 594, 608, 1663, 2017 ]	[ "dynamical friction", "galaxy evolution", "galaxy mergers", "supermassive black holes", "agn host galaxies" ]
2020ApJ...904L..12C	Detection of Dynamical Instability in Titan's Thermospheric Jet	Similar to Earth, Saturn's largest moon, Titan, possesses a system of high-altitude zonal winds (or jets) that encircle the globe. Using the Atacama Large Millimeter/submillimeter Array (ALMA) in 2016 August, Lellouch et al. discovered an equatorial jet at much higher altitudes than previously known, with a surprisingl...	[ 112, 400, 1346 ]	[ "atmospheric circulation", "doppler imaging", "radio interferometry" ]
2023ApJ...950L...6L	Carbon Abundance of Globular Cluster M22 (NGC 6656) and the Surface Carbon Depletion Rates of the Milky Way Globular Clusters	It is well known that metal-poor red giant branch (RGB) stars show variations in some elemental abundances, including carbon, due to the internal mixing accompanied by their own in situ CN cycle in the hydrogen burning shell. With our new photometric carbon abundance measurements of RGB stars in M22 and other globular ...	[ 1622, 1284, 656, 725, 224, 1599, 1368, 194 ]	[ "stellar populations", "population ii stars", "globular star clusters", "hertzsprung russell diagram", "chemical abundances", "stellar evolution", "red giant branch", "carbon-nitrogen cycle" ]

End of preview. Expand in Data Studio

Titles and Abstracts for papers from ADS/SciX that have been tagged with some Unified Astronomy Thesaurus (https://astrothesaurus.org/) keywords.
Bibcode provided for identification.

DatasetDict({
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        num_rows: 18677
    })
    val: Dataset({
        features: ['bibcode', 'title', 'abstract', 'verified_uat_ids', 'verified_uat_labels'],
        num_rows: 3025
    })
})

For each sample:

'verified_uat_labels' is a list of UAT concept keywords tagged to this paper (by the authors or publisher).
'verified_uat_ids' is a list of integers corresponding to the UAT id for each concept above.

It is recommended to use the UAT repository (https://github.com/astrothesaurus/UAT) to match IDs to concepts (these potentially having synonyms) and work on the IDs, not the labels.

Sample:

{
  bibcode : '2020ApJ...891..100S',
  title : 'Dynamic Potential Sputtering of Lunar Analog Material by Solar Wind Ions',
  abstract : 'Pyroxenes ((Ca, Mg, Fe, Mn)<SUB>2</SUB>Si<SUB>2</SUB>O<SUB>6</SUB>) belong to the most abundant rock forming minerals that make up the surface of rocky planets and moons. Therefore, sputtering of pyroxenes by solar wind ions has to be considered as a very important process for modifying the surface of planetary bodies. This is increased due to potential sputtering by multiply charged ions; to quantify this effect, sputtering of wollastonite (CaSiO<SUB>3</SUB>) by He<SUP>2+</SUP> ions was investigated. Thin films of CaSiO<SUB>3</SUB> deposited on a quartz crystal microbalance were irradiated, allowing precise, in situ, real time sputtering yield measurements. Experimental results were compared with SDTrimSP simulations, which were improved by adapting the used input parameters. On freshly prepared surfaces, He<SUP>2+</SUP> ions show a significant increase in sputtering, as compared to equally fast He<SUP>+</SUP> ions. However, the yield decreases exponentially with fluence, reaching a lower steady state after sputtering of the first few monolayers. Experiments using Ar<SUP>8+</SUP> ions show a similar behavior, which is qualitatively explained by a preferential depletion of surface oxygen due to potential sputtering. A corresponding quantitative model is applied, and the observed potential sputtering behaviors of both He and Ar are reproduced very well. The results of these calculations support the assumption that mainly O atoms are affected by potential sputtering. Based on our findings, we discuss the importance of potential sputtering for the solar wind eroding the lunar surface. Estimated concentration changes and sputtering yields are both in line with previous modeling for other materials, allowing a consistent perspective on the effects of solar wind potential sputtering.',
  verified_uat_ids : [1534, 499, 1692, 948, 1024, 2004],
  verified_uat_labels : ['solar wind', 'exosphere', 'the moon', 'lunar composition', 'mercury (planet)', 'laboratory astrophysics'],
}

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