Datasets:

juliensimon
/

galaxy-zoo-2-morphology

specobjid int64	dr8objid int64	dr7objid int64	ra float64	dec float64	rastring string	decstring string	sample string	gz2class string	total_classifications int64	total_votes int64	t01_smooth_or_features_a01_smooth_count int64	t01_smooth_or_features_a01_smooth_weight float64	t01_smooth_or_features_a01_smooth_fraction float64	t01_smooth_or_features_a01_smooth_weighted_fraction float64	t01_smooth_or_features_a01_smooth_debiased float64	t01_smooth_or_features_a02_features_or_disk_count int64	t01_smooth_or_features_a02_features_or_disk_weight float64	t01_smooth_or_features_a02_features_or_disk_fraction float64	t01_smooth_or_features_a02_features_or_disk_weighted_fraction float64	t01_smooth_or_features_a02_features_or_disk_debiased float64	t01_smooth_or_features_a02_features_or_disk_flag int64	t01_smooth_or_features_a03_star_or_artifact_count int64	t01_smooth_or_features_a03_star_or_artifact_weight float64	t01_smooth_or_features_a03_star_or_artifact_fraction float64	t01_smooth_or_features_a03_star_or_artifact_weighted_fraction float64	t01_smooth_or_features_a03_star_or_artifact_debiased float64	t02_edgeon_a04_yes_count int64	t02_edgeon_a04_yes_weight float64	t02_edgeon_a04_yes_fraction float64	t02_edgeon_a04_yes_weighted_fraction float64	t02_edgeon_a04_yes_debiased float64	t02_edgeon_a04_yes_flag int64	t02_edgeon_a05_no_count int64	t02_edgeon_a05_no_weight float64	t02_edgeon_a05_no_fraction float64	t02_edgeon_a05_no_weighted_fraction float64	t02_edgeon_a05_no_debiased float64	t02_edgeon_a05_no_flag int64	t03_bar_a06_bar_count int64	t03_bar_a06_bar_weight float64	t03_bar_a06_bar_fraction float64	t03_bar_a06_bar_weighted_fraction float64	t03_bar_a06_bar_debiased float64	t03_bar_a06_bar_flag int64	t03_bar_a07_no_bar_count int64	t03_bar_a07_no_bar_weight float64	t03_bar_a07_no_bar_fraction float64	t03_bar_a07_no_bar_weighted_fraction float64	t03_bar_a07_no_bar_debiased float64	t03_bar_a07_no_bar_flag int64	t04_spiral_a08_spiral_count int64	t04_spiral_a08_spiral_weight float64	t04_spiral_a08_spiral_fraction float64	t04_spiral_a08_spiral_weighted_fraction float64	t04_spiral_a08_spiral_debiased float64	t04_spiral_a08_spiral_flag int64	t04_spiral_a09_no_spiral_count int64	t04_spiral_a09_no_spiral_weight float64	t04_spiral_a09_no_spiral_fraction float64	t04_spiral_a09_no_spiral_weighted_fraction float64	t04_spiral_a09_no_spiral_debiased float64	t05_bulge_prominence_a10_no_bulge_count int64	t05_bulge_prominence_a10_no_bulge_weight float64	t05_bulge_prominence_a10_no_bulge_fraction float64	t05_bulge_prominence_a10_no_bulge_weighted_fraction float64	t05_bulge_prominence_a10_no_bulge_debiased float64	t05_bulge_prominence_a11_just_noticeable_count int64	t05_bulge_prominence_a11_just_noticeable_weight float64	t05_bulge_prominence_a11_just_noticeable_fraction float64	t05_bulge_prominence_a11_just_noticeable_weighted_fraction float64	t05_bulge_prominence_a11_just_noticeable_debiased float64	t05_bulge_prominence_a12_obvious_count int64	t05_bulge_prominence_a12_obvious_weight float64	t05_bulge_prominence_a12_obvious_fraction float64	t05_bulge_prominence_a12_obvious_weighted_fraction float64	t05_bulge_prominence_a12_obvious_debiased float64	t05_bulge_prominence_a13_dominant_count int64	t05_bulge_prominence_a13_dominant_weight float64	t05_bulge_prominence_a13_dominant_fraction float64	t05_bulge_prominence_a13_dominant_weighted_fraction float64	t05_bulge_prominence_a13_dominant_debiased float64	t06_odd_a14_yes_count int64	t06_odd_a14_yes_weight float64	t06_odd_a14_yes_fraction float64	t06_odd_a14_yes_weighted_fraction float64	t06_odd_a14_yes_debiased float64	t06_odd_a15_no_count int64	t06_odd_a15_no_weight float64	t06_odd_a15_no_fraction float64	t06_odd_a15_no_weighted_fraction float64	t06_odd_a15_no_debiased float64	t06_odd_a15_no_flag int64	t07_rounded_a16_completely_round_count int64	t07_rounded_a16_completely_round_weight float64	t07_rounded_a16_completely_round_fraction float64	t07_rounded_a16_completely_round_weighted_fraction float64	t07_rounded_a16_completely_round_debiased float64	t07_rounded_a17_in_between_count int64	t07_rounded_a17_in_between_weight float64	t07_rounded_a17_in_between_fraction float64	t07_rounded_a17_in_between_weighted_fraction float64	t07_rounded_a17_in_between_debiased float64	t07_rounded_a18_cigar_shaped_count int64	t07_rounded_a18_cigar_shaped_weight float64	t07_rounded_a18_cigar_shaped_fraction float64	t07_rounded_a18_cigar_shaped_weighted_fraction float64	t07_rounded_a18_cigar_shaped_debiased float64	t08_odd_feature_a19_ring_count int64	t08_odd_feature_a19_ring_weight float64	t08_odd_feature_a19_ring_fraction float64	t08_odd_feature_a19_ring_weighted_fraction float64	t08_odd_feature_a19_ring_debiased float64	t08_odd_feature_a20_lens_or_arc_count int64	t08_odd_feature_a20_lens_or_arc_weight float64	t08_odd_feature_a20_lens_or_arc_fraction float64	t08_odd_feature_a20_lens_or_arc_weighted_fraction float64	t08_odd_feature_a20_lens_or_arc_debiased float64	t08_odd_feature_a21_disturbed_count int64	t08_odd_feature_a21_disturbed_weight float64	t08_odd_feature_a21_disturbed_fraction float64	t08_odd_feature_a21_disturbed_weighted_fraction float64	t08_odd_feature_a21_disturbed_debiased float64	t08_odd_feature_a22_irregular_count int64	t08_odd_feature_a22_irregular_weight float64	t08_odd_feature_a22_irregular_fraction float64	t08_odd_feature_a22_irregular_weighted_fraction float64	t08_odd_feature_a22_irregular_debiased float64	t08_odd_feature_a23_other_count int64	t08_odd_feature_a23_other_weight float64	t08_odd_feature_a23_other_fraction float64	t08_odd_feature_a23_other_weighted_fraction float64	t08_odd_feature_a23_other_debiased float64	t08_odd_feature_a24_merger_count int64	t08_odd_feature_a24_merger_weight float64	t08_odd_feature_a24_merger_fraction float64	t08_odd_feature_a24_merger_weighted_fraction float64	t08_odd_feature_a24_merger_debiased float64	t08_odd_feature_a38_dust_lane_count int64	t08_odd_feature_a38_dust_lane_weight float64	t08_odd_feature_a38_dust_lane_fraction float64	t08_odd_feature_a38_dust_lane_weighted_fraction float64	t08_odd_feature_a38_dust_lane_debiased float64	t09_bulge_shape_a25_rounded_count int64	t09_bulge_shape_a25_rounded_weight float64	t09_bulge_shape_a25_rounded_fraction float64	t09_bulge_shape_a25_rounded_weighted_fraction float64	t09_bulge_shape_a25_rounded_debiased float64	t09_bulge_shape_a26_boxy_count int64	t09_bulge_shape_a26_boxy_weight float64	t09_bulge_shape_a26_boxy_fraction float64	t09_bulge_shape_a26_boxy_weighted_fraction float64	t09_bulge_shape_a26_boxy_debiased float64	t09_bulge_shape_a27_no_bulge_count int64	t09_bulge_shape_a27_no_bulge_weight float64	t09_bulge_shape_a27_no_bulge_fraction float64	t09_bulge_shape_a27_no_bulge_weighted_fraction float64	t09_bulge_shape_a27_no_bulge_debiased float64	t09_bulge_shape_a27_no_bulge_flag int64	t10_arms_winding_a28_tight_count int64	t10_arms_winding_a28_tight_weight float64	t10_arms_winding_a28_tight_fraction float64	t10_arms_winding_a28_tight_weighted_fraction float64	t10_arms_winding_a28_tight_debiased float64	t10_arms_winding_a28_tight_flag int64	t10_arms_winding_a29_medium_count int64	t10_arms_winding_a29_medium_weight float64	t10_arms_winding_a29_medium_fraction float64	t10_arms_winding_a29_medium_weighted_fraction float64	t10_arms_winding_a29_medium_debiased float64	t10_arms_winding_a30_loose_count int64	t10_arms_winding_a30_loose_weight float64	t10_arms_winding_a30_loose_fraction float64	t10_arms_winding_a30_loose_weighted_fraction float64	t10_arms_winding_a30_loose_debiased float64	t11_arms_number_a31_1_count int64	t11_arms_number_a31_1_weight float64	t11_arms_number_a31_1_fraction float64	t11_arms_number_a31_1_weighted_fraction float64	t11_arms_number_a31_1_debiased float64	t11_arms_number_a32_2_count int64	t11_arms_number_a32_2_weight float64	t11_arms_number_a32_2_fraction float64	t11_arms_number_a32_2_weighted_fraction float64	t11_arms_number_a32_2_debiased float64	t11_arms_number_a33_3_count int64	t11_arms_number_a33_3_weight float64	t11_arms_number_a33_3_fraction float64	t11_arms_number_a33_3_weighted_fraction float64	t11_arms_number_a33_3_debiased float64	t11_arms_number_a34_4_count int64	t11_arms_number_a34_4_weight float64	t11_arms_number_a34_4_fraction float64	t11_arms_number_a34_4_weighted_fraction float64	t11_arms_number_a34_4_debiased float64	t11_arms_number_a36_more_than_4_count int64	t11_arms_number_a36_more_than_4_weight float64	t11_arms_number_a36_more_than_4_fraction float64	t11_arms_number_a36_more_than_4_weighted_fraction float64	t11_arms_number_a36_more_than_4_debiased float64	t11_arms_number_a37_cant_tell_count int64	t11_arms_number_a37_cant_tell_weight float64	t11_arms_number_a37_cant_tell_fraction float64	t11_arms_number_a37_cant_tell_weighted_fraction float64	t11_arms_number_a37_cant_tell_debiased float64	dominant_morphology string	is_barred bool	is_spiral bool	is_edge_on bool
1,802,674,929,645,152,300	null	588,017,703,996,096,500	160.9904	11.70379	10:43:57.70	+11:42:13.6	original	SBb?t	44	349	1	0.099	0.023	0.002	0.002	42	42	0.955	0.975	0.975	1	1	1	0.023	0.023	0.023	0	0	0	0	0	0	42	42	1	1	1	1	24	24	0.571	0.571	0.571	0	18	18	0.429	0.429	0.429	0	40	40	0.952	0.952	0.952	1	2	2	0.048	0.048	0.048	2	2	0.048	0.048	0.048	8	8	0.19	0.19	0.19	25	25	0.595	0.595	0.595	7	7	0.167	0.167	0.167	13	12.099	0.302	0.287	0.287	30	30	0.698	0.713	0.713	0	0	0	0	0	0	1	0.099	1	0	0	0	0	0	0	0	9	8.099	0.692	0.669	0.669	2	2	0.154	0.165	0.165	1	1	0.077	0.083	0.083	0	0	0	0	0	1	1	0.077	0.083	0.083	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	19	19	0.475	0.475	0.475	0	14	14	0.35	0.35	0.35	7	7	0.175	0.175	0.175	0	0	0	0	0	9	9	0.225	0.225	0.225	8	8	0.2	0.2	0.2	4	4	0.1	0.1	0.1	9	9	0.225	0.225	0.225	10	10	0.25	0.25	0.25	features_or_disk	true	true	false
1,992,983,900,678,285,300	null	587,738,569,780,428,800	192.41083	15.164207	12:49:38.60	+15:09:51.1	original	Ser	45	185	5	5	0.111	0.115	0.115	38	38	0.844	0.873	0.873	1	2	0.52	0.044	0.012	0.012	34	34	0.919	0.919	0.919	1	3	3	0.081	0.081	0.081	0	3	3	1	1	1	0	0	0	0	0	0	0	1	1	0.333	0.333	0.333	0	2	2	0.667	0.667	0.667	1	1	0.333	0.333	0.333	1	1	0.333	0.333	0.333	0	0	0	0	0	1	1	0.333	0.333	0.333	9	9	0.209	0.209	0.209	34	34	0.791	0.791	0.791	0	0	0	0	0	0	0	0	0	0	0	5	5	1	1	1	0	0	0	0	0	0	0	0	0	0	1	1	0.111	0.111	0.111	0	0	0	0	0	4	4	0.444	0.444	0.444	0	0	0	0	0	4	4	0.444	0.444	0.444	12	12	0.343	0.343	0.343	11	11	0.314	0.314	0.314	12	12	0.343	0.343	0.343	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	features_or_disk	true	false	true
1,489,568,922,213,574,700	null	587,735,695,913,320,400	210.8022	54.348953	14:03:12.53	+54:20:56.2	original	Sc+t	46	372	0	0	0	0	0	44	44	0.957	0.966	0.966	1	2	1.531	0.043	0.034	0.034	1	1	0.023	0.023	0.046684	0	43	43	0.977	0.977	0.94483	1	4	4	0.093	0.093	0.125048	0	39	39	0.907	0.907	0.880335	1	43	43	1	1	1	1	0	0	0	0	0	1	1	0.023	0.023	0.030989	18	18	0.419	0.419	0.61405	18	18	0.419	0.419	0.184101	6	6	0.14	0.14	0.13986	22	22	0.5	0.5	0.532818	22	22	0.5	0.5	0.537854	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	2	0.091	0.091	0.091	2	2	0.091	0.091	0.091	7	7	0.318	0.318	0.318	3	3	0.136	0.136	0.136	6	6	0.273	0.273	0.273	2	2	0.091	0.091	0.091	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	31	31	0.721	0.721	0.721	0	8	8	0.186	0.186	0.186	4	4	0.093	0.093	0.093	0	0	0	0	0	3	3	0.07	0.07	0.07	4	4	0.093	0.093	0.093	5	5	0.116	0.116	0.116	28	28	0.651	0.651	0.651	3	3	0.07	0.07	0.07	features_or_disk	false	true	false
2,924,083,625,089,591,300	1,237,668,496,859,529,200	587,742,775,634,624,500	185.30342	18.382704	12:21:12.82	+18:22:57.7	original	SBc(r)	45	289	8	8	0.178	0.178	0.178	37	37	0.822	0.822	0.822	1	0	0	0	0	0	6	6	0.162	0.162	0.162	0	31	31	0.838	0.838	0.838	1	21	21	0.677	0.677	0.677	0	10	10	0.323	0.323	0.323	0	13	13	0.433	0.433	0.433	0	17	17	0.567	0.567	0.567	8	8	0.258	0.258	0.258	15	15	0.484	0.484	0.484	2	2	0.065	0.065	0.065	6	6	0.194	0.194	0.194	29	29	0.659	0.659	0.659	15	15	0.341	0.341	0.341	0	1	1	0.125	0.125	0.125	5	5	0.625	0.625	0.625	2	2	0.25	0.25	0.25	14	14	0.483	0.483	0.483	1	1	0.034	0.034	0.034	1	1	0.034	0.034	0.034	1	1	0.034	0.034	0.034	10	10	0.345	0.345	0.345	1	1	0.034	0.034	0.034	1	1	0.034	0.034	0.034	4	4	0.667	0.667	0.667	1	1	0.167	0.167	0.167	1	1	0.167	0.167	0.167	0	5	5	0.357	0.357	0.357	0	7	7	0.5	0.5	0.5	2	2	0.143	0.143	0.143	0	0	0	0	0	7	7	0.5	0.5	0.5	0	0	0	0	0	0	0	0	0	0	1	1	0.071	0.071	0.071	6	6	0.429	0.429	0.429	features_or_disk	true	false	false
1,387,165,355,897,546,800	1,237,658,491,208,794,000	587,732,769,983,889,400	187.36679	8.749928	12:29:28.03	+08:44:59.7	extra	Ser	49	210	12	12	0.245	0.249	0.454267	36	36	0.735	0.748	0.748749	0	1	0.11	0.02	0.002	0.002002	33	33	0.917	0.917	0.931926	1	3	3	0.083	0.083	0.059507	0	1	1	0.333	0.333	0.333	0	2	2	0.667	0.667	0.667	0	1	1	0.333	0.333	0.333	0	2	2	0.667	0.667	0.667	0	0	0	0	0	2	2	0.667	0.667	0.667	1	1	0.333	0.333	0.333	0	0	0	0	0	21	21	0.438	0.438	0.329332	27	27	0.562	0.562	0.693187	0	0	0	0	0	0	1	1	0.083	0.083	0.083	11	11	0.917	0.917	0.917	3	3	0.143	0.143	0.143	1	1	0.048	0.048	0.048	1	1	0.048	0.048	0.048	2	2	0.095	0.095	0.095	3	3	0.143	0.143	0.143	0	0	0	0	0	11	11	0.524	0.524	0.524	18	18	0.545	0.545	0.545	11	11	0.333	0.333	0.333	4	4	0.121	0.121	0.121	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	features_or_disk	false	false	true
1,833,070,384,862,226,400	null	588,017,725,475,782,700	188.52254	7.693286	12:34:05.41	+07:41:35.8	extra	Ec	42	149	27	27	0.643	0.686	0.770782	12	12	0.286	0.305	0.305	0	3	0.355	0.071	0.009	0.009	8	8	0.667	0.667	0.667	0	4	4	0.333	0.333	0.333	0	0	0	0	0	0	0	4	4	1	1	1	0	1	1	0.25	0.25	0.25	0	3	3	0.75	0.75	0.75	0	0	0	0	0	1	1	0.25	0.25	0.25	3	3	0.75	0.75	0.75	0	0	0	0	0	7	7	0.179	0.179	0.198115	32	32	0.821	0.821	0.829018	1	1	1	0.037	0.037	0.037	9	9	0.333	0.333	0.333	17	17	0.63	0.63	0.63	1	1	0.143	0.143	0.143	0	0	0	0	0	2	2	0.286	0.286	0.286	0	0	0	0	0	3	3	0.429	0.429	0.429	0	0	0	0	0	1	1	0.143	0.143	0.143	5	5	0.625	0.625	0.625	1	1	0.125	0.125	0.125	2	2	0.25	0.25	0.25	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	smooth	false	false	true
1,809,324,500,555,163,600	1,237,661,948,639,772,700	588,017,702,391,578,600	175.24481	11.471134	11:40:58.75	+11:28:16.1	original	Sb+t	45	356	0	0	0	0	0	45	45	1	1	1	1	0	0	0	0	0	1	1	0.022	0.022	0.022	0	44	44	0.978	0.978	0.978	1	2	2	0.045	0.045	0.045	0	42	42	0.955	0.955	0.955	1	43	43	0.977	0.977	0.977	1	1	1	0.023	0.023	0.023	0	0	0	0	0	18	18	0.409	0.409	0.409	24	24	0.545	0.545	0.545	2	2	0.045	0.045	0.045	2	2	0.044	0.044	0.044	43	43	0.956	0.956	0.956	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0.5	0.5	0.5	0	0	0	0	0	1	1	0.5	0.5	0.5	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	27	27	0.628	0.628	0.628	0	15	15	0.349	0.349	0.349	1	1	0.023	0.023	0.023	0	0	0	0	0	1	1	0.023	0.023	0.023	0	0	0	0	0	4	4	0.093	0.093	0.093	32	32	0.744	0.744	0.744	6	6	0.14	0.14	0.14	features_or_disk	false	true	false
1,625,960,870,049,769,500	1,237,660,636,001,665,000	588,297,864,730,181,600	176.5325	47.49476	11:46:07.80	+47:29:41.1	original	Sen	45	206	4	4	0.089	0.091	0.091	39	38.5	0.867	0.871	0.871	1	2	1.686	0.044	0.038	0.038	29	28.5	0.744	0.74	0.74	0	10	10	0.256	0.26	0.26	0	1	1	0.1	0.1	0.1	0	9	9	0.9	0.9	0.9	0	5	5	0.5	0.5	0.5	0	5	5	0.5	0.5	0.5	2	2	0.2	0.2	0.2	7	7	0.7	0.7	0.7	0	0	0	0	0	1	1	0.1	0.1	0.1	6	6	0.14	0.141	0.141	37	36.5	0.86	0.859	0.859	1	0	0	0	0	0	0	0	0	0	0	4	4	1	1	1	0	0	0	0	0	0	0	0	0	0	1	1	0.167	0.167	0.167	0	0	0	0	0	1	1	0.167	0.167	0.167	0	0	0	0	0	4	4	0.667	0.667	0.667	2	2	0.069	0.07	0.07	0	0	0	0	0	27	26.5	0.931	0.93	0.93	1	2	2	0.4	0.4	0.4	0	2	2	0.4	0.4	0.4	1	1	0.2	0.2	0.2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	5	5	1	1	1	features_or_disk	false	false	true
1,907,389,949,162,842,000	null	588,017,704,545,812,500	190.98575	13.126677	12:43:56.58	+13:07:36.0	original	Sc?t	43	360	0	0	0	0	0	43	43	1	1	1	1	0	0	0	0	0	1	1	0.023	0.023	0.023	0	43	43	0.977	0.977	0.977	1	16	16	0.372	0.372	0.372	0	27	27	0.628	0.628	0.628	0	42	42	0.977	0.977	0.977	1	1	1	0.023	0.023	0.023	14	14	0.326	0.326	0.326	24	24	0.558	0.558	0.558	4	4	0.093	0.093	0.093	1	1	0.023	0.023	0.023	15	15	0.341	0.341	0.341	29	29	0.659	0.659	0.659	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0.067	0.067	0.067	1	1	0.067	0.067	0.067	5	5	0.333	0.333	0.333	4	4	0.267	0.267	0.267	3	3	0.2	0.2	0.2	0	0	0	0	0	1	1	0.067	0.067	0.067	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	29	29	0.69	0.69	0.69	0	13	13	0.31	0.31	0.31	0	0	0	0	0	0	0	0	0	0	3	3	0.071	0.071	0.071	6	6	0.143	0.143	0.143	5	5	0.119	0.119	0.119	11	11	0.262	0.262	0.262	17	17	0.405	0.405	0.405	features_or_disk	false	true	false
1,818,435,055,295,424,500	1,237,661,812,812,349,400	588,017,566,564,155,400	186.44469	12.661867	12:25:46.72	+12:39:42.7	extra	Sb?t(u)	43	244	6	6	0.14	0.143	0.143	35	35	0.814	0.833	0.833	1	2	1.028	0.047	0.024	0.024	16	16	0.457	0.457	0.457	0	19	19	0.543	0.543	0.543	0	1	1	0.053	0.053	0.053	0	18	18	0.947	0.947	0.947	0	11	11	0.611	0.611	0.611	0	7	7	0.389	0.389	0.389	5	5	0.263	0.263	0.263	5	5	0.263	0.263	0.263	6	6	0.316	0.316	0.316	3	3	0.158	0.158	0.158	23	23	0.561	0.561	0.561	18	18	0.439	0.439	0.439	0	0	0	0	0	0	0	0	0	0	0	6	6	1	1	1	4	4	0.174	0.174	0.174	1	1	0.043	0.043	0.043	0	0	0	0	0	0	0	0	0	0	3	3	0.13	0.13	0.13	0	0	0	0	0	15	15	0.652	0.652	0.652	7	7	0.438	0.438	0.438	1	1	0.062	0.062	0.062	8	8	0.5	0.5	0.5	0	8	8	0.667	0.667	0.667	0	3	3	0.25	0.25	0.25	1	1	0.083	0.083	0.083	0	0	0	0	0	5	5	0.417	0.417	0.417	0	0	0	0	0	0	0	0	0	0	1	1	0.083	0.083	0.083	6	6	0.5	0.5	0.5	features_or_disk	false	true	false
1,633,799,289,501,149,200	1,237,661,434,844,938,200	588,298,663,573,454,800	184.0488	47.883244	12:16:11.71	+47:52:59.7	original	Ser	45	211	11	11	0.244	0.25	0.25	33	33	0.733	0.75	0.75	0	1	0.016	0.022	0	0	22	22	0.667	0.667	0.667	0	11	11	0.333	0.333	0.333	0	0	0	0	0	0	0	11	11	1	1	1	0	2	2	0.182	0.182	0.182	0	9	9	0.818	0.818	0.818	2	2	0.182	0.182	0.182	2	2	0.182	0.182	0.182	6	6	0.545	0.545	0.545	1	1	0.091	0.091	0.091	19	19	0.432	0.432	0.432	25	25	0.568	0.568	0.568	0	0	0	0	0	0	3	3	0.273	0.273	0.273	8	8	0.727	0.727	0.727	8	8	0.421	0.421	0.421	1	1	0.053	0.053	0.053	2	2	0.105	0.105	0.105	0	0	0	0	0	3	3	0.158	0.158	0.158	0	0	0	0	0	5	5	0.263	0.263	0.263	11	11	0.5	0.5	0.5	3	3	0.136	0.136	0.136	8	8	0.364	0.364	0.364	0	2	2	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	2	1	1	1	features_or_disk	false	false	true
588,870,424,280,983,600	1,237,651,735,226,417,200	587,726,014,001,512,600	194.50494	1.57585	12:58:01.19	+01:34:33.1	original	Sc(r)	43	237	3	3	0.07	0.071	0.071	37	37	0.86	0.873	0.873	1	3	2.377	0.07	0.056	0.056	18	18	0.486	0.486	0.486	0	19	19	0.514	0.514	0.514	0	4	4	0.211	0.211	0.211	0	15	15	0.789	0.789	0.789	0	9	9	0.474	0.474	0.474	0	10	10	0.526	0.526	0.526	3	3	0.167	0.167	0.167	9	9	0.5	0.5	0.5	4	4	0.222	0.222	0.222	2	2	0.111	0.111	0.111	22	22	0.55	0.55	0.55	18	18	0.45	0.45	0.45	0	1	1	0.333	0.333	0.333	1	1	0.333	0.333	0.333	1	1	0.333	0.333	0.333	10	10	0.455	0.455	0.455	0	0	0	0	0	3	3	0.136	0.136	0.136	0	0	0	0	0	5	5	0.227	0.227	0.227	0	0	0	0	0	4	4	0.182	0.182	0.182	11	11	0.611	0.611	0.611	0	0	0	0	0	7	7	0.389	0.389	0.389	0	6	6	0.667	0.667	0.667	0	3	3	0.333	0.333	0.333	0	0	0	0	0	0	0	0	0	0	2	2	0.222	0.222	0.222	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	7	7	0.778	0.778	0.778	features_or_disk	false	false	false
2,252,962,056,078,649,300	1,237,664,819,287,949,300	587,739,098,063,044,600	184.37265	37.80735	12:17:29.44	+37:48:26.5	original	Sen	44	182	7	7	0.159	0.159	0.116333	36	36	0.818	0.818	0.818	1	1	1	0.023	0.023	0.023	35	35	0.972	0.972	0.979075	1	1	1	0.028	0.028	0.017507	0	0	0	0	0	0	0	1	1	1	1	1	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	13	13	0.302	0.302	0.445855	30	30	0.698	0.698	0.646386	0	0	0	0	0	0	0	0	0	0	0	7	7	1	1	1	0	0	0	0	0	1	1	0.077	0.077	0.077	4	4	0.308	0.308	0.308	1	1	0.077	0.077	0.077	3	3	0.231	0.231	0.231	1	1	0.077	0.077	0.077	3	3	0.231	0.231	0.231	2	2	0.059	0.059	0.01355	0	0	0	0	0	32	32	0.941	0.941	0.986456	1	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	features_or_disk	false	true	true
3,132,375,113,912,051,700	null	587,742,615,095,935,100	234.132	16.60778	15:36:31.68	+16:36:28.0	original	Sb+t	46	347	0	0	0	0	0	44	43.71	0.957	0.977	0.977	1	2	1.016	0.043	0.023	0.023	2	2	0.045	0.046	0.046	0	42	41.71	0.955	0.954	0.954	1	10	9.892	0.238	0.237	0.237	0	32	31.818	0.762	0.763	0.763	0	41	40.892	0.976	0.98	0.98	1	1	0.818	0.024	0.02	0.02	1	1	0.024	0.024	0.024	14	13.818	0.333	0.331	0.331	23	23	0.548	0.551	0.551	4	3.892	0.095	0.093	0.093	3	3	0.068	0.069	0.069	41	40.71	0.932	0.931	0.931	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	3	3	1	1	1	0	0	0	0	0	0	0	0	0	0	2	2	1	1	1	0	0	0	0	0	0	0	0	0	0	0	38	37.892	0.927	0.927	0.927	1	3	3	0.073	0.073	0.073	0	0	0	0	0	0	0	0	0	0	1	1	0.024	0.024	0.024	1	1	0.024	0.024	0.024	1	1	0.024	0.024	0.024	24	23.892	0.585	0.584	0.584	14	14	0.341	0.342	0.342	features_or_disk	false	true	false
876,021,909,865,654,300	1,237,653,617,475,453,000	588,009,371,227,258,900	180.55087	62.137238	12:02:12.21	+62:08:14.1	original	Sb+t	39	314	1	1	0.026	0.026	0.026	38	38	0.974	0.974	0.974	1	0	0	0	0	0	1	1	0.026	0.026	0.026	0	38	37.5	0.974	0.974	0.974	1	3	3	0.079	0.08	0.08	0	35	34.5	0.921	0.92	0.92	1	37	36.5	0.974	0.973	0.973	1	1	1	0.026	0.027	0.027	0	0	0	0	0	4	4	0.105	0.107	0.107	18	18	0.474	0.48	0.48	16	15.5	0.421	0.413	0.413	6	6	0.15	0.152	0.152	34	33.5	0.85	0.848	0.848	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	3	3	0.5	0.5	0.5	0	0	0	0	0	0	0	0	0	0	1	1	0.167	0.167	0.167	2	2	0.333	0.333	0.333	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	29	28.5	0.784	0.781	0.781	0	8	8	0.216	0.219	0.219	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	2	0.054	0.055	0.055	29	29	0.784	0.795	0.795	6	5.5	0.162	0.151	0.151	features_or_disk	false	true	false
1,178,913,180,705,908,700	null	587,733,410,447,491,100	218.1952	49.457912	14:32:46.85	+49:27:28.5	original	Sc?t	45	328	0	0	0	0	0	43	42.609	0.956	0.998	0.998	1	2	0.096	0.044	0.002	0.002	5	4.609	0.119	0.111	0.111	0	37	37	0.881	0.889	0.889	1	1	1	0.027	0.027	0.027	0	36	36	0.973	0.973	0.973	1	37	37	1	1	1	1	0	0	0	0	0	0	0	0	0	0	19	19	0.5	0.5	0.5	16	16	0.421	0.421	0.421	3	3	0.079	0.079	0.079	5	4.609	0.116	0.108	0.108	38	38	0.884	0.892	0.892	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0.609	0.2	0.132	0.132	1	1	0.2	0.217	0.217	0	0	0	0	0	1	1	0.2	0.217	0.217	2	2	0.4	0.434	0.434	0	0	0	0	0	0	0	0	0	0	2	1.609	0.4	0.349	0.349	0	0	0	0	0	3	3	0.6	0.651	0.651	0	25	25	0.658	0.658	0.658	0	10	10	0.263	0.263	0.263	3	3	0.079	0.079	0.079	0	0	0	0	0	3	3	0.079	0.079	0.079	2	2	0.053	0.053	0.053	1	1	0.026	0.026	0.026	12	12	0.316	0.316	0.316	20	20	0.526	0.526	0.526	features_or_disk	false	true	false
379,506,367,435,663,360	null	587,724,648,188,543,000	192.05688	-3.332845	12:48:13.65	-03:19:58.2	original	SBb2l(o)	42	304	4	4	0.095	0.101	0.101	36	34.694	0.857	0.874	0.874	1	2	1.021	0.048	0.026	0.026	3	2.573	0.083	0.074	0.074	0	33	32.121	0.917	0.926	0.926	1	30	29.121	0.938	0.936	0.936	1	2	2	0.062	0.064	0.064	0	28	27.121	0.848	0.844	0.844	1	5	5	0.152	0.156	0.156	6	6	0.182	0.187	0.187	8	7.121	0.242	0.222	0.222	11	11	0.333	0.342	0.342	8	8	0.242	0.249	0.249	25	23.694	0.625	0.612	0.612	15	15	0.375	0.388	0.388	0	4	4	1	1	1	0	0	0	0	0	0	0	0	0	0	4	3.121	0.16	0.132	0.132	4	4	0.16	0.169	0.169	3	3	0.12	0.127	0.127	3	3	0.12	0.127	0.127	6	6	0.24	0.253	0.253	1	1	0.04	0.042	0.042	4	3.573	0.16	0.151	0.151	1	0.573	0.333	0.223	0.223	1	1	0.333	0.389	0.389	1	1	0.333	0.389	0.389	0	6	6	0.214	0.221	0.221	0	10	10	0.357	0.369	0.369	12	11.121	0.429	0.41	0.41	3	3	0.107	0.111	0.111	21	20.121	0.75	0.742	0.742	1	1	0.036	0.037	0.037	0	0	0	0	0	0	0	0	0	0	3	3	0.107	0.111	0.111	features_or_disk	true	true	false

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Galaxy Zoo 2 Morphological Classifications

Part of the Astronomy Datasets collection on Hugging Face.

243,500 citizen-science galaxy morphology classifications from Galaxy Zoo 2, the largest visual morphological classification project in astronomy. Each galaxy was classified by multiple volunteers answering a decision tree of questions about shape, structure, and features.

Dataset description

Galaxy Zoo 2 asked hundreds of thousands of volunteers to classify galaxy images from the Sloan Digital Sky Survey (SDSS). This dataset contains the spectroscopic-redshift sample (Table 5 from Willett et al. 2013): 243,500 galaxies with vote counts, vote fractions, weighted fractions, debiased probabilities, and classification flags for 11 morphological tasks spanning 37 possible answers.

The decision tree covers: smooth vs. featured, edge-on disk, bar presence, spiral structure, bulge prominence, oddities (ring, lens, disturbed, irregular, merger, dust lane), roundedness, bulge shape, and spiral arm properties (tightness, count).

Quick stats

243,500 galaxies classified
103,515 classified as smooth/elliptical
139,738 classified as featured/disk
86,775 with spiral structure (debiased probability > 0.5)
34,286 barred galaxies (debiased probability > 0.5)
29,597 edge-on galaxies (debiased probability > 0.5)
179.4 average votes per galaxy

Schema

The dataset has 237 columns. Key columns:

Column	Type	Description
`specobjid`	int64	SDSS spectroscopic object ID
`dr8objid`	int64	SDSS DR8 photometric object ID
`dr7objid`	int64	SDSS DR7 photometric object ID
`ra`	float64	Right Ascension (J2000, degrees)
`dec`	float64	Declination (J2000, degrees)
`rastring`	string	RA as sexagesimal string
`decstring`	string	Dec as sexagesimal string
`sample`	string	Sample membership flag
`gz2class`	string	Summary morphological class
`total_classifications`	int64	Total number of classifications
`total_votes`	int64	Total number of votes
`dominant_morphology`	string	Derived: highest debiased probability (smooth / features_or_disk / star_or_artifact)
`is_barred`	bool	Derived: bar debiased probability > 0.5
`is_spiral`	bool	Derived: spiral debiased probability > 0.5
`is_edge_on`	bool	Derived: edge-on debiased probability > 0.5

For each of the 11 morphological tasks (t01-t11) and their answers (a01-a37), there are up to 6 columns:

Suffix	Description
`_count`	Raw number of votes for this answer
`_weight`	Weighted vote count (correcting for classifier consistency)
`_fraction`	Simple vote fraction
`_weighted_fraction`	Weighted vote fraction
`_debiased`	Debiased probability (corrected for redshift-dependent bias)
`_flag`	Classification flag (1 = plurality answer after debiasing)

Usage

from datasets import load_dataset

ds = load_dataset("juliensimon/galaxy-zoo-2-morphology", split="train")
df = ds.to_pandas()

# Elliptical galaxies (smooth, debiased probability > 0.8)
ellipticals = df[df["t01_smooth_or_features_a01_smooth_debiased"] > 0.8]

# Barred spiral galaxies
barred_spirals = df[df["is_barred"] & df["is_spiral"]]

# Edge-on disks
edge_on = df[df["is_edge_on"]]

# Distribution of morphological classes
print(df["gz2class"].value_counts().head(10))

# Merger candidates (odd feature = merger, debiased > 0.5)
if "t08_odd_feature_a24_merger_debiased" in df.columns:
    mergers = df[df["t08_odd_feature_a24_merger_debiased"] > 0.5]

Data source

Galaxy Zoo 2 — Willett et al. (2013), "Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey", MNRAS, 435, 2835. arXiv:1308.3496

This table is the spectroscopic-redshift subsample (Table 5).

Related datasets

open-ngc — NGC/IC galaxy and nebula catalog
exoplanets — NASA Exoplanet Archive
messier-objects — Messier catalog of deep-sky objects

Pipeline

Source code: juliensimon/space-datasets

Citation

@dataset{galaxy_zoo_2_morphology,
  author = {Simon, Julien},
  title = {Galaxy Zoo 2 Morphological Classifications},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/juliensimon/galaxy-zoo-2-morphology},
  note = {Based on Galaxy Zoo 2 data (Willett et al. 2013, MNRAS 435, 2835)}
}