2002AJ....124.3061O

Query : 2002AJ....124.3061O

2002AJ....124.3061O - Astron. J., 124, 3061-3072 (2002/December-0)

The color-magnitude relation in Coma: clues to the age and metallicity of cluster populations.

ODELL A.P., SCHOMBERT J. and RAKOS K.

Abstract (from CDS):

We have observed three fields of the Coma Cluster of galaxies with a narrowband (modified Strömgren) filter system. Observed galaxies include 31 in the vicinity of NGC 4889, 48 near NGC 4874, and 60 near NGC 4839, complete to M₅₅₀₀=-18 in all three subclusters. Spectrophotometric classification finds all three subclusters of Coma to be dominated by red, E-type (elliptical/S0) galaxies with a mean blue fraction, f_B, of 0.10. The blue fraction increases to fainter luminosities, possible remnants of dwarf starburst population or the effects of dynamical friction removing bright, blue galaxies from the cluster population by mergers. We find the color-magnitude (CM) relation to be well defined and linear over the range of M₅₅₀₀=-13 to -22. The observational error is lower than the true scatter around the CM relation, indicating that galaxies achieve their final positions in the mass-metallicity plane by stochastic processes. After calibration to multimetallicity models, bright elliptical galaxies are found to have luminosity-weighted mean [Fe/H] values between -0.5 and +0.5, whereas low-luminosity elliptical galaxies have [Fe/H] values ranging from -2 to solar. The lack of CM relation in our continuum color suggests that a systematic age effect cancels the metallicity effects in this bandpass. This is confirmed with our age index Δ(bz-yz), which finds a weak correlation between luminosity and mean stellar age in elliptical galaxies such that the stellar populations of bright elliptical galaxies are 2-3 Gyrs younger than low-luminosity elliptical galaxies. With respect to environmental effects, there is a slight decreasing metallicity gradient with respect to distance to each subcluster center, strongest around NGC 4874. Since NGC 4874 is the dynamic and X-ray center of the Coma Cluster, this implies that environmental effects on low-luminosity elliptical galaxies are strongest at the cluster core compared with outlying subgroups.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: Evolution - Galaxies: Stellar Content

VizieR on-line data: <Available at CDS (J/AJ/124/3061): table1.dat table2.dat table3.dat>

Nomenclature: Table 1: [OSR2002] aNNN N=31 among (Nos a001 to a039). Table 2: [OSR2002] aNNN N=48 among (Nos b041 to b089). Table 3: [OSR2002] aNNN (Nos c090 to c149).

Simbad objects: 140

Full paper

View the references in ADS

Number of rows : 140

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	ACO 115	ClG	00 55 59.5	+26 19 14						~	270	1
2	ACO S 373	ClG	03 38 29.4	-35 27 08						~	1827	0
3	ClG 1054-03	ClG	10 57 00.2	-03 37 27			22			~	454	0
4	LEDA 126886	GiC	12 56 55.932	+27 27 44.60						~	18	0
5	[HHM2010] 194.23381+27.48168	GiC	12 56 56.111	+27 28 54.03						~	2	0
6	[HHM2010] 194.23406+27.47951	GiC	12 56 56.173	+27 28 46.24						~	5	0
7	[HHM2010] 194.24861+27.45526	GiC	12 56 59.663	+27 27 18.89						~	4	0
8	2MASX J12570166+2722198	GiC	12 57 01.6984964064	+27 22 19.473476772		16.70		15.18		~	24	0
9	[HHM2010] 194.26236+27.46240	GiC	12 57 02.970	+27 27 44.65						~	3	0
10	[HHM2010] 194.26284+27.46522	GiC	12 57 03.080	+27 27 54.82						~	5	0
11	[OSR2002] c137	GiC	12 57 03.24	+27 23 17.3						~	1	0
12	LEDA 83675	G	12 57 04.310	+27 31 32.85		17.44		15.97	15.74	~	31	0
13	SDSS J125708.35+272923.9	G	12 57 08.353	+27 29 23.96					19.9	~	4	0
14	[HHM2010] 194.28678+27.50737	GiC	12 57 08.838	+27 30 26.51						~	2	0
15	MCG+05-31-023	GiG	12 57 09.4184229096	+27 27 59.137216200		15.0				~	81	0
16	[HHM2010] 194.29429+27.41904	GiC	12 57 10.629	+27 25 08.54						~	2	0
17	2MASX J12571076+2724177	Sy2	12 57 10.7545984320	+27 24 17.791185420		15			14.14	~	62	0
18	GMP 5034	G	12 57 11.011	+27 31 42.22					18.6	~	7	0
19	[HHM2010] 194.29596+27.56074	GiC	12 57 11.029	+27 33 38.66						~	3	0
20	[OSR2002] c140	GiC	12 57 11.18	+27 24 04.7						~	1	0
21	[OSR2002] c091	GiC	12 57 12.00	+27 34 54.1						~	1	0
22	GMP 5026	G	12 57 12.277	+27 23 13.03					18.7	~	7	0
23	GMP 5022	GiC	12 57 12.742	+27 27 26.80		20.51		19.67		~	4	0
24	GMP 5020	G	12 57 13.228	+27 24 37.16		19.7			18.4	~	8	0
25	GMP 5013	GiC	12 57 13.375	+27 32 52.02		20.79		19.85		~	4	0
26	[HHM2010] 194.30671+27.40871	GiC	12 57 13.606	+27 24 31.35		20.1				~	4	0
27	[OSR2002] c104	GiC	12 57 14.69	+27 31 03.7						~	1	0
28	NAME NGC 4839 Group	GrG	12 57 21.5	+27 31 54						~	80	0
29	[OSR2002] c144	GiC	12 57 21.58	+27 23 45.3						~	1	0
30	ECO 11571	GiC	12 57 21.7035780960	+27 28 29.556576372		18.67		16.98		~	17	0
31	[HHM2010] 194.34207+27.47013	GiC	12 57 22.093	+27 28 12.47						~	3	0
32	LEDA 126876	GiC	12 57 23.568	+27 32 59.77						~	19	0
33	[HHM2010] 194.35054+27.46360	GiC	12 57 24.132	+27 27 48.98						~	2	0
34	[HHM2010] 194.35138+27.38857	GiC	12 57 24.332	+27 23 18.82						~	3	0
35	NGC 4839	rG	12 57 24.3563164776	+27 29 52.203087132	13.56	13.02	12.06			~	467	3
36	Mrk 55	LIN	12 57 25.2481557048	+27 24 16.550025768		16.0				~	70	1
37	2MASX J12572585+2732458	LIN	12 57 25.8391398984	+27 32 46.177668564		15.3				~	52	0
38	2MASX J12572600+2724188	EmG	12 57 25.9797721728	+27 24 18.617908356						~	10	0
39	[HHM2010] 194.36538+27.53708	GiC	12 57 27.686	+27 32 13.48						~	4	0
40	2MASX J12573058+2732348	GiC	12 57 30.5916594048	+27 32 34.964349792		18.21		16.61		~	17	0
41	A2 232	*	12 57 33.4047698385	+27 32 54.963224873		18.30	17.65			~	3	0
42	[HHM2010] 194.39674+27.56799	GiC	12 57 35.213	+27 34 04.75						~	3	0
43	NGC 4842	G	12 57 35.8534614792	+27 29 35.689996896		14.9				~	84	0
44	MCG+05-31-031	LIN	12 57 36.1334483592	+27 29 05.381539332		16.30				~	53	1
45	[HHM2010] 194.40340+27.46299	GiC	12 57 36.811	+27 27 46.79						~	3	0
46	[OSR2002] c148	GiC	12 57 37.46	+27 24 37.6						~	1	0
47	LEDA 126860	GiC	12 57 38.730	+27 27 18.85						~	10	0
48	LEDA 126855	GiC	12 57 43.2322002864	+27 34 39.414517356						~	20	0
49	[HHM2010] 194.43253+27.46148	GiC	12 57 43.798	+27 27 41.34						~	7	0
50	LEDA 83694	GiC	12 57 45.746	+27 25 45.61		16				~	21	0
51	[OSR2002] c098	GiC	12 57 46.18	+27 34 18.9						~	1	0
52	[HHM2010] 194.44954+27.49445	GiC	12 57 47.886	+27 29 39.99						~	3	0
53	[OSR2002] c130	GiC	12 57 48.53	+27 27 14.5						~	1	0
54	[HHM2010] 194.45755+27.47667	GiC	12 57 49.807	+27 28 36.03						~	3	0
55	[HHM2010] 194.45928+27.52102	GiC	12 57 50.224	+27 31 15.72						~	3	0
56	LEDA 126851	GiC	12 57 50.7585366552	+27 29 27.175356780						~	18	0
57	[HHM2010] 194.46215+27.53476	GiC	12 57 50.925	+27 32 05.04						~	5	0
58	[HHM2010] 194.46676+27.44390	GiC	12 57 52.024	+27 26 38.08						~	3	0
59	[OSR2002] c124	GiC	12 57 52.44	+27 28 18.8						~	1	0
60	[HHM2010] 194.46959+27.57816	GiC	12 57 52.699	+27 34 41.40						~	3	0
61	[OSR2002] c126	GiC	12 57 53.47	+27 27 12.8						~	1	0
62	MCG+05-31-036	AGN	12 57 54.3651088944	+27 29 26.392988076		16.38		15.02		~	49	1
63	[OSR2002] c149	GiC	12 57 57.05	+27 22 51.9						~	1	0
64	FOCA 0728-773	GiC	12 57 57.11	+27 26 34.5						~	6	1
65	[OSR2002] b081	GiC	12 59 11.23	+27 58 51.1						~	1	0
66	NGC 4864	GiG	12 59 13.129	+27 58 36.91	15.338	14.8	13.872	13.321	12.594	~	134	0
67	NGC 4867	GiG	12 59 15.2505719952	+27 58 14.616353712	15.60	15.5	14.14	13.969	13.213	~	126	0
68	SDSS J125915.58+275356.9	GiC	12 59 15.53	+27 53 57.5	19.71	19.362	18.63	18.107	17.681	~	13	0
69	CAIRNS J125916.68+275856.9	GiC	12 59 16.62	+27 58 57.0	20.85	20.396	19.53	18.987	18.154	~	9	0
70	LEDA 1822726	GiC	12 59 19.70	+27 58 06.0	19.19	18.995	18.07	17.629	17.048	~	10	0
71	LEDA 1822852	GiC	12 59 19.716	+27 58 24.60	18.57	18.677	17.41	17.209	16.686	~	31	0
72	2MASX J12592016+2753098	GiC	12 59 20.1719431200	+27 53 09.554536464	16.59	16.657	15.34	15.24	14.591	~	84	0
73	2MASX J12592136+2758248	GiC	12 59 21.4151965488	+27 58 24.866619600	17.67	17.608	16.48	16.18	15.57	~	40	0
74	2MASX J12592265+2753488	GiC	12 59 22.6199737728	+27 53 48.734841408	16.66	16.504	15.33	14.972	14.39	~	66	0
75	SDSS J125923.41+275510.4	GiC	12 59 23.4135989592	+27 55 10.460997300	19.202	18.699	17.692	17.15	16.511	~	20	0
76	LEDA 126792	GiC	12 59 25.046	+27 59 48.22	18.59	18.55	17.35	17.129	16.306	~	34	0
77	2MASX J12592529+2758048	GiC	12 59 25.3302921888	+27 58 04.567089792	16.97	17.055	15.59	15.541	14.863	~	64	0
78	2MASX J12592536+2756038	GiC	12 59 25.3390430424	+27 56 04.172369748	18.08	18.094	17.02	16.73	16.12	~	32	0
79	IC 3968	EmG	12 59 25.4893671192	+27 58 23.553468660	16.70	16.795	15.32	15.271	14.593	~	62	0
80	LEDA 44594	EmG	12 59 26.5981818744	+27 59 54.533097708	17.532	17.181	16.264	15.711	15.052	~	74	0
81	SDSS J125928.50+280109.3	AG?	12 59 28.503	+28 01 09.34	19.35	19.32	18.49	17.86	17.9	~	22	0
82	LEDA 44602	AG?	12 59 28.7291561256	+28 02 25.896174396	17.389	16.995	16.033	15.471	14.803	~	51	0
83	GMP 3420	GiC	12 59 29.52	+28 00 22.7						~	4	0
84	NGC 4871	AGN	12 59 29.9631023208	+27 57 23.169658968	15.59	15.1	14.07	13.801	13.113	~	116	0
85	IC 3973	AG?	12 59 30.8230953864	+27 53 03.142254372	15.50	15.2	14.03	13.802	13.114	~	108	0
86	ECO 11254	G	12 59 31.10	+27 57 18.4	18.56	18.295	17.445	16.813	16.154	~	13	0
87	LEDA 44616	EmG	12 59 31.4454616392	+28 02 47.777266752	16.664	15.931	15.014	14.412	13.647	~	65	0
88	[OSR2002] b062	GiC	12 59 32.09	+28 00 07.1						~	1	0
89	LEDA 1821555	GiC	12 59 32.105	+27 55 15.75	19.30	19.13	18.23	17.55	17.13	~	23	0
90	NGC 4873	EmG	12 59 32.7956813376	+27 59 01.023698256	15.53	15.4	14.13	13.941	13.224	~	121	0
91	NGC 4872	AGN	12 59 34.1212116072	+27 56 48.678716616	15.58	14.7	14.10	14.092	13.423	~	139	0
92	LEDA 1821898	GiC	12 59 35.180	+27 56 05.00	18.974	18.894	18.055	17.607	17.065	~	23	0
93	GMP 3336	GiC	12 59 35.33	+27 54 22.0						~	9	0
94	NGC 4874	LIN	12 59 35.7093764280	+27 57 33.293892204	13.01	13.7	11.40	12.122	11.386	~	783	3
95	LEDA 126788	G	12 59 37.0110665016	+28 01 06.974523876	19.09	18.99	18.07	17.49	16.98	~	26	0
96	NGC 4875	GiC	12 59 37.9093929384	+27 54 26.400242232	16.03	15.92	14.57	14.322	13.605	~	96	0
97	LEDA 44635	AG?	12 59 37.9916897496	+28 00 03.640609728	18.17	18.097	16.98	16.709	16.031	~	35	0
98	LEDA 44636	G	12 59 38.3213456016	+27 59 13.953200280	17.19	17.13	15.88	15.651	15.002	~	64	0
99	LEDA 44644	G	12 59 39.6590757624	+27 57 14.115321252	16.97	16.99	15.59	15.41	14.99	~	73	0
100	LEDA 44651	EmG	12 59 40.2735433608	+27 58 05.677395348	17.47	17.375	16.02	15.812	15.153	~	61	0
101	Z 160-233	G	12 59 42.3031814928	+27 55 29.073263772	17.64	16.553	15.42	15.051	14.373	~	98	0
102	LEDA 44656	G	12 59 43.7289109656	+27 59 40.858551456	16.53	16.384	15.15	14.832	14.154	~	93	0
103	LEDA 44652	G	12 59 44.2059500952	+27 57 30.335521572	16.94	16.982	15.70	15.52	14.881	~	60	0
104	2MASX J12594422+2752037	GiC	12 59 44.2094234376	+27 52 03.683102700	17.78	17.60	16.58	16.07	15.56	~	34	0
105	NGC 4876	LIN	12 59 44.4043327032	+27 54 44.883805032	15.61	15.1	14.18	13.992	13.333	~	149	0
106	ACO 1656	ClG	12 59 44.40	+27 54 44.9						~	4803	2
107	GMP 3196	GiC	12 59 44.6993296392	+27 53 23.131781592	18.55	18.50	17.50	17.01	16.53	~	24	0
108	GMP 3171	G	12 59 46.713	+28 00 00.42	19.57	19.055	18.41	17.858	17.6	~	10	0
109	IC 3998	G	12 59 46.7810952336	+27 58 25.887811872	16.07	15.909	14.61	14.341	13.605	~	94	0
110	SDSS J125948.57+275857.7	AG?	12 59 48.577	+27 58 57.70	19.06	18.83	18.29	17.54	17.4	~	23	0
111	[EDG2007] 239	GiC	12 59 50.00	+27 54 34.4	19.768	19.558	18.674	18.082	17.423	~	7	0
112	LEDA 1821341	G	12 59 50.182	+27 54 45.49	18.60	18.68	17.49	17.07	17.0	~	31	0
113	GMP 3098	G	12 59 53.934	+27 58 13.69	19.18	18.93	18.15	17.52	17.4	~	21	0
114	NGC 4883	GiG	12 59 56.0172515304	+28 02 04.976091780	15.76	15.2	14.27	13.872	13.165	~	106	0
115	2MASX J12595670+2755483	GiC	12 59 56.6529405408	+27 55 48.133297416	16.72	16.765	15.42	15.231	14.592	~	67	0
116	[OSR2002] a033	G	12 59 58.14	+27 57 15.2						~	1	0
117	LEDA 44692	AG?	12 59 59.469	+27 56 26.06	18.42	18.426	17.38	17.098	16.2	~	34	0
118	LEDA 44693	G	13 00 00.9698252088	+27 56 43.584354600	18.39	18.329	17.34	17.01	16.429	~	36	0
119	LEDA 44707	AG?	13 00 05.3994110544	+28 01 28.005793932	17.03	17.106	15.92	15.71	15.09	~	55	0
120	IC 4011	G	13 00 06.3940488048	+28 00 14.849196120	16.37	16.207	15.05	14.661	14.002	~	116	0
121	LEDA 126768	GiC	13 00 07.474	+27 57 29.05	19.19	18.963	18.06	17.558	16.899	~	18	0
122	NGC 4889	EmG	13 00 08.097	+27 58 37.29	12.93	13.0	11.30	11.652	10.906	~	707	1
123	SDSS J130008.39+275716.7	GiC	13 00 08.32	+27 57 17.7	19.52	19.21	18.40	17.899	17.26	~	11	0
124	GMP 2877	GiC	13 00 11.410	+27 54 36.37	19.87	19.88	19.08	18.41	18.3	~	11	0
125	IC 4021	LIN	13 00 14.7492904032	+28 02 28.679693064	16.12	15.974	14.75	14.451	13.783	~	122	0
126	NGC 4894	AG?	13 00 16.5193713624	+27 58 03.082120068	16.28	16.106	15.04	14.71	14.051	~	73	0
127	2MASX J13001702+2803502	GiC	13 00 17.0317499136	+28 03 50.085089820	16.89	16.855	15.52	15.321	14.643	~	68	0
128	2MASS J13001763+2759145	AG?	13 00 17.6321119536	+27 59 15.098162028	19.28	19.10	18.31	17.71	17.20	~	25	0
129	LEDA 93586	AG?	13 00 18.7771580832	+27 56 13.466814396	16.99	17.014	15.83	15.621	14.962	~	56	0
130	LEDA 126759	AG?	13 00 18.8857734576	+28 00 33.525438120	18.56	18.301	17.36	16.831	16.22	~	29	0
131	IC 4026	EmG	13 00 22.1409893328	+28 02 49.238219148	15.99	15.5	14.63	14.202	13.553	~	101	0
132	LEDA 126756	G	13 00 24.822	+27 55 35.84	18.50	18.52	17.33	17.129	16.499	~	34	0
133	GMP 2684	GiC	13 00 25.356	+27 56 56.93		19.41	18.75	18.33	17.91	~	6	0
134	IC 4030	G	13 00 27.9700441440	+27 57 21.580940088	16.65	16.50	15.27	14.91	14.49	~	74	0
135	IC 4033	EmG	13 00 28.3941057864	+27 58 20.692734312	16.57	16.741	15.23	15.203	14.593	~	58	0
136	ACO 2218	ClG	16 35 54.0	+66 13 00						~	809	1
137	ACO 2283	ClG	17 44 28	+69 38.9						~	23	0
138	ACO 2317	ClG	19 08 20.500	+69 03 20.00						~	42	0
139	NAME NGC 4889 Group	GrG	~	~						~	6	0
140	NAME NGC 4874 Group	GrG	~	~						~	8	0

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