2002A&A...382...60D

Query : 2002A&A...382...60D

2002A&A...382...60D - Astronomy and Astrophysics, volume 382, 60-83 (2002/1-4)

Hidden star-formation in the cluster of galaxies Abell 1689.

DUC P.-A., POGGIANTI B.M., FADDA D., ELBAZ D., FLORES H., CHANIAL P., FRANCESCHINI A., MOORWOOD A. and CESARSKY C.

Abstract (from CDS):

At a redshift of 0.18, Abell 1689 is so far the most distant cluster of galaxies for which substantial mid-infrared (MIR) data have been published. Its mapping with the ISOCAM camera onboard the ISO satellite allowed the detection of 30 cluster members at 6.75µm (LW2 filter) and 16 cluster members at 15µm (LW3 filter) within a clustercentric radius of 0.5Mpc (Fadda et al., 2000A&A...361..827F (Paper I)). We present here the follow-up optical photometric and spectroscopic observations which were used to study the individual properties of the galaxy members of A1689. We confirm the high fraction of blue galaxies initially reported in this rich cluster by Butcher & Oemler (1984ApJ...285..426B), that was challenged by some subsequent studies. We discuss the spectral and morphological properties of all cluster members in our spectroscopic sample, and of the MIR-detected galaxies in particular. Sources with a low [15µm]/[6.75µm] flux ratio typically consist of luminous passive early-type galaxies while those with a high MIR color index are mainly luminous, blue, emission-line, morphologically disturbed spirals, i.e. the star-forming galaxies usually associated with the ``Butcher-Oemler'' effect. On the other hand, at least 30% of the 15µm sources have optical counterparts showing no evidence for current star-formation activity, while their 15µm emission is most likely due to obscured star formation. We argue that the LW3 luminosity measured in the cluster members is a reliable tracer of the total infrared luminosity which in A1689 galaxies peaks at L_IR=6.2x10¹⁰L☉. We derive from L_IR a star-formation rate free of dust extinction, SFR(IR), which we compare with that determined in the optical from the flux of the OII emission line, SFR(opt). The highest total star formation rates (11M_☉/yr) and dust extinction are measured in those galaxies exhibiting in their optical spectrum a signature of a dusty starburst. In contrast, none of the galaxies with post-starburst optical spectra has been detected by ISOCAM down to a 15µm flux limit corresponding to 1.4M_☉/yr. We find a median SFR(IR) of the LW3-detected galaxies of 2M_☉/yr that is ten times higher than the median SFR(opt) of the OII - detected galaxies. The ratio SFR(IR)/SFR(opt) is in fact very high, ranging between 10 and 100 for LW3-detected galaxies with OII emission. We conclude that a major part, at least 90%, of the star formation activity taking place in Abell 1689 is hidden. Whether the high extinction measured in the star-forming cluster members results from the cluster environment itself or reflects a comparable extinction in the coeval field is still unclear.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Abell 1689 - galaxies: evolution - infrared: galaxies

VizieR on-line data: <Available at CDS (J/A+A/382/60): table1.dat table2.dat table3.dat table4.dat>

Nomenclature: Table 1: [DPF2002] NN (Nos 1-74). Table 4: [DPF2002] JHHMMSS.ss+DDMMSS.s N=18.

Simbad objects: 125

Full paper

View the references in ADS

Number of rows : 125

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	ACO 851	ClG	09 43 01.2	+46 59 54	18.9				~	327	0
2	NAME Virgo Cluster	ClG	12 26 32.1	+12 43 24					~	6645	0
3	NAME Hubble Deep Field	reg	12 36 49.5	+62 12 58					~	1922	1
4	ACO 1656	ClG	12 59 44.40	+27 54 44.9					~	4803	2
5	2dFGRS TGN259Z070	GiC	13 11 18.44184	-01 18 39.7260	18.92	17.69	17.113		~	4	0
6	LEDA 88741	rG	13 11 20.8098901008	-01 20 02.310451368	20.47	18.83			~	10	0
7	SDSS J131121.59-011943.5	GiC	13 11 21.5987768496	-01 19 43.608179100	20.76	19.13			~	8	0
8	[DPF2002] J131123.95-012146.3	G	13 11 23.95	-01 21 46.3		21.55			~	1	0
9	SDSS J131124.05-011907.0	GiC	13 11 24.0600	-01 19 07.032	21.34	20.01	19.27	18.69	~	9	0
10	[DPF2002] 2	GiC	13 11 24.2840	-01 21 14.480	21.41	20.82			~	2	0
11	SDSS J131124.33-011837.3	GiC	13 11 24.32861	-01 18 37.2333	21.59	20.29	19.60	19.04	~	6	0
12	SDSS J131124.45-012110.9	EmG	13 11 24.4594644288	-01 21 10.968434208	20.72	19.11			~	13	0
13	LEDA 88743	rG	13 11 24.4748589864	-01 22 15.254105088	20.48	18.81			~	11	0
14	[MBC96] ACO 1689 442	GiC	13 11 24.6520	-01 20 03.380		22.65		21.33	~	3	0
15	[AMA2011] a1689 050	GiC	13 11 25.1308531992	-01 19 31.007727408	20.98	19.66	18.98	18.40	~	8	0
16	LEDA 88746	rG	13 11 25.3750804032	-01 20 36.943458468	19.48	18.06	17.32	16.72	~	18	0
17	SDSS J131125.71-011724.1	GiC	13 11 25.7157598776	-01 17 24.182159604	20.91	19.31			~	4	0
18	[GH91] 10	GiC	13 11 25.9740	-01 19 35.680	21.81	20.48			~	3	0
19	[GH91] 30	GiC	13 11 26.550	-01 22 00.98	20.56	19.32	18.67	18.15	~	5	0
20	SDSS J131126.91-011936.7	GiC	13 11 26.9188654872	-01 19 36.802312284	20.34	19.02			~	12	0
21	[MBC96] ACO 1689 646	GiC	13 11 27.0840	-01 18 48.880	21.86	20.72	20.01	19.84	~	7	0
22	[AMA2011] a1689 061	GiC	13 11 27.0940	-01 21 43.080	22.21	21.08	20.50	20.11	~	5	0
23	SDSS J131127.10-011609.7	GiC	13 11 27.10102	-01 16 09.7985	19.79	18.76	18.19	17.67	~	4	0
24	[BCS2002] 4	GiC	13 11 27.1090	-01 20 58.420	20.81	19.68			~	4	0
25	LEDA 88751	GiC	13 11 27.1352368416	-01 22 08.940535140	20.45	19.04	18.31	17.70	~	10	0
26	TCG ACO 1689 217	GiC	13 11 27.2240	-01 20 10.180	19.41	18.24			~	7	0
27	[BCS2002] 3454	GiC	13 11 27.4251	-01 22 47.501	20.48	19.12	18.39	17.76	~	8	0
28	[BCS2002] 6	GiC	13 11 27.6810	-01 21 07.190	20.59	19.50			~	5	0
29	[DPF2002] J131127.81-011853.3	G	13 11 27.8440	-01 18 52.980					~	2	0
30	2dFGRS TGN259Z065	rG	13 11 27.8458620792	-01 20 07.682470836	19.63	18.21	17.50	17.48	~	14	0
31	[CBB2010b] A1689 123	GiC	13 11 27.8651157504	-01 21 12.864862044	21.55	19.95			~	6	0
32	SDSS J131127.91-012136.6	GiC	13 11 27.9202760088	-01 21 36.631314828	21.13	19.66			~	9	0
33	LEDA 88747	rG	13 11 27.9467158368	-01 23 08.483858664	20.10	18.69	17.95	17.37	~	10	0
34	SDSS J131128.04-011843.7	GiC	13 11 28.0230	-01 18 43.890	20.77	19.46	18.75	18.23	~	10	0
35	SDSS J131128.21-011811.8	AGN	13 11 28.21522	-01 18 11.8945	21.62	20.41	19.69	19.16	~	5	0
36	LEDA 88754	rG	13 11 28.2287319000	-01 20 43.389522060	18.84	17.49	16.78	16.22	~	13	0
37	[DPF2002] 22	GiC	13 11 28.3240	-01 18 45.180	20.76	19.49	18.86	18.33	~	8	0
38	[FCB2007] J131128.325-011827.50	G	13 11 28.3250	-01 18 27.500	22.94	21.67		20.59	~	3	0
39	LEDA 88755	GiC	13 11 28.3737229056	-01 19 58.441853064	19.23	18.11	17.48	16.95	~	13	0
40	[BCS2002] 3331	GiC	13 11 28.3789266264	-01 18 32.004832248	21.90	21.34			~	4	0
41	[DPF2002] J131128.40-012025.7	GiC	13 11 28.48	-01 20 24.9	21.13	19.19			~	7	0
42	[BCS2002] 3315	GiC	13 11 28.4828951040	-01 22 41.544377760	20.48	18.82			~	4	0
43	[AMA2011] a1689 008	GiC	13 11 28.5940	-01 20 26.780	20.81	19.42	19.16	18.88	~	7	0
44	SDSS J131128.76-011902.5	GiC	13 11 28.7240	-01 19 02.980	21.41	20.09	19.41	18.82	~	12	0
45	[GH91] 118	GiC	13 11 28.7640	-01 21 43.580	21.05	20.97			~	4	0
46	SDSS J131129.01-012116.6	GiC	13 11 29.0260343424	-01 21 16.699438692	19.31	17.93	17.19	16.61	~	16	0
47	LEDA 88760	GiC	13 11 29.1019203144	-01 21 37.337461992	21.21	19.57			~	7	0
48	LEDA 88759	GiC	13 11 29.1351475680	-01 21 55.174002516	20.52	19.12	18.40	17.81	~	9	0
49	[BCS2002] 12	GiC	13 11 29.310	-01 17 49.78	20.34	19.24			~	3	0
50	SDSS J131129.32-011916.5	GiC	13 11 29.3246137344	-01 19 16.598932212	20.70	19.41	18.73	18.17	~	13	0
51	[DPF2002] J131129.36-012043.9	GiC	13 11 29.38	-01 20 43.9	20.98	19.43			~	3	0
52	SDSS J131129.41-011834.6	GiC	13 11 29.4141355656	-01 18 34.650450756	20.44	19.09	18.39	17.83	~	12	0
53	ACO 1689	ClG	13 11 29.5	-01 20 28					~	1125	0
54	SDSS J131129.50-012027.9	BiC	13 11 29.510	-01 20 28.02	17.87	16.48	15.75	15.16	~	30	1
55	[BCS2002] 15	GiC	13 11 29.7290	-01 17 46.644	20.99	19.72			~	5	0
56	[DPF2002] 31	AGN	13 11 29.74	-01 17 43.2	22.20	21.02	20.37	19.77	~	3	0
57	[DPF2002] 30	GiC	13 11 29.7732444672	-01 17 21.485982372	20.49	19.10	18.38	17.80	~	4	0
58	[BCS2002] 3128	GiC	13 11 29.8690	-01 20 15.230	21.82	20.11			~	7	0
59	[BCS2002] 16	GiC	13 11 29.9740	-01 20 40.480	19.83	18.72			~	10	0
60	LEDA 88765	GiC	13 11 30.0145677672	-01 22 07.307727780	19.85	18.51	17.79	17.23	~	9	0
61	[MBC96] ACO 1689 412	GiC	13 11 30.0313405824	-01 20 17.299303332	21.62	19.96			~	4	0
62	TCG ACO 1689 3	GiC	13 11 30.0440	-01 20 42.980	19.53	18.10			~	8	0
63	SDSS J131130.05-011624.9	GiC	13 11 30.0510	-01 16 24.956	20.92	19.62	18.86	18.21	~	6	0
64	2MASS J13113005-0120286	BiC	13 11 30.0555394024	-01 20 28.487002882	20.42	18.67			~	9	0
65	[DPF2002] 38	GiC	13 11 30.11	-01 22 30.8	20.41	19.12	18.43	17.88	~	4	0
66	SDSS J131130.24-012051.7	GiC	13 11 30.2447386008	-01 20 51.771609312	19.77	18.38	17.66	17.08	~	10	0
67	MCG+00-34-016	rG	13 11 30.3028054272	-01 20 29.135582412	19.53	17.87			~	15	0
68	[DPF2002] J131130.34-012046.0	GiC	13 11 30.34	-01 20 46.0	20.92	19.28			~	5	0
69	[DPF2002] J131130.50-012046.0	GiC	13 11 30.50	-01 20 46.0					~	1	0
70	[BCS2002] 22	GiC	13 11 30.5996742792	-01 20 43.664514252	20.40	18.78			~	9	0
71	[BCS2002] 23	GiC	13 11 30.7510	-01 21 38.780	21.89	21.46		20.32	~	5	0
72	[MBC96] ACO 1689 369	GiC	13 11 30.9340	-01 20 30.680					~	5	0
73	TCG ACO 1689 226	GiC	13 11 31.1034006744	-01 20 52.508965632	19.44	18.04	17.29	16.70	~	8	0
74	SDSS J131131.09-012127.7	rG	13 11 31.1149083576	-01 21 27.747642456	20.28	18.50	17.352		~	11	0
75	[CBB2010b] A1689 148	GiC	13 11 31.1240	-01 21 25.380	20.28	18.50	17.352		~	10	0
76	NVSS J131131-011934	rG	13 11 31.4277701040	-01 19 32.734711776	18.80	17.34	16.61	15.97	~	23	2
77	[BCS2002] 2926	GiC	13 11 31.5100	-01 19 24.870	21.27	19.74			~	7	0
78	SDSS J131131.60-011727.6	GiC	13 11 31.6107782208	-01 17 27.649834368	20.55	19.16	18.44	17.85	~	5	0
79	[FHB2012] ELS 3203	EmG	13 11 32.0890	-01 19 36.600					~	9	0
80	LEDA 88774	rG	13 11 32.1157983528	-01 21 38.031386184	19.91	18.61	17.95	17.35	~	17	0
81	SDSS J131132.13-011946.7	rG	13 11 32.1405758904	-01 19 46.756515036	19.75	18.31	17.56	16.95	~	14	0
82	SDSS J131132.21-012210.6	rG	13 11 32.2191089256	-01 22 10.690727628	20.19	18.80	18.11	17.52	~	11	0
83	[CBB2010b] A1689 154	EmG	13 11 32.4640	-01 22 18.280	21.13	20.32	19.88	19.53	~	5	0
84	LEDA 88771	rG	13 11 32.6105861664	-01 23 51.297435492	19.93	18.55	17.83	17.23	~	11	0
85	[BCS2002] 2780	GiC	13 11 32.645	-01 18 37.28		23.96			~	2	0
86	LEDA 88770	GiC	13 11 32.67	-01 18 41.7	19.09	18.05	17.53	17.11	~	12	0
87	SDSS J131132.68-011958.5	BiC	13 11 32.6853907008	-01 19 58.533688560	18.51	17.05	16.28	15.68	~	18	0
88	LEDA 88773	rG	13 11 32.7316551792	-01 19 31.648510956	19.55	17.66	16.945		~	13	0
89	[GH91] 178	GiC	13 11 33.0340	-01 21 24.780	23.16	22.06			~	3	0
90	LEDA 88776	rG	13 11 33.1569738576	-01 17 01.781440260	19.55	18.19	17.48	16.90	~	11	0
91	[GH91] 156	GiC	13 11 33.7240	-01 19 39.180	22.85	21.16			~	3	0
92	SDSS J131133.80-011843.8	GiC	13 11 33.8074882920	-01 18 43.904485620	20.23	18.89	18.20	17.63	~	9	0
93	[MMK2007] J131134.17-012235.4	AGN	13 11 34.07	-01 22 35.8	24.06	23.09	22.14	21.38	~	4	0
94	SDSS J131134.06-012101.8	GiC	13 11 34.0747393032	-01 21 01.888461576	19.44	18.40	17.88	17.45	~	12	0
95	2dFGRS TGN396Z037	LSB	13 11 34.46	-01 18 11.3	19.31	18.21	17.65	17.15	~	10	0
96	LEDA 88780	rG	13 11 34.7178078864	-01 17 42.898419024	19.81	18.44	17.70	17.11	~	11	0
97	SDSS J131134.77-012059.1	GiC	13 11 34.7810484120	-01 20 59.147166552	20.52	19.15	18.42	17.82	~	13	0
98	SDSS J131135.14-012317.3	GiC	13 11 35.14121	-01 23 17.3276	21.42	19.90			~	3	0
99	[DPF2002] J131135.21-011854.9	GiC	13 11 35.250	-01 18 54.27	22.61	21.08			~	4	0
100	[FHB2012] ELS 1077	EmG	13 11 35.2580	-01 20 30.170		22.59		20.64	~	5	0
101	LEDA 88782	rG	13 11 35.3677590240	-01 21 33.149813832	20.02	18.59	17.86	17.26	~	17	0
102	SDSS J131135.39-012042.6	GiC	13 11 35.4010773624	-01 20 42.662473008	21.21	19.54			~	7	0
103	SDSS J131135.53-011742.1	GiC	13 11 35.5355980824	-01 17 42.205802748	20.55	19.20	18.49	17.93	~	8	0
104	APMUKS (BJ) B130901.41-010417.1	AGN	13 11 35.6172052632	-01 20 12.178072104	19.75	18.82	18.34	18.84	~	15	0
105	[DPF2002] J131135.95-012229.0	GiC	13 11 35.98	-01 22 28.2	21.71	20.59			~	4	0
106	LEDA 88785	rG	13 11 36.0174055224	-01 23 40.443836208	19.88	18.46	17.73	17.10	~	11	0
107	[DPF2002] J131136.40-012206.1	G	13 11 36.421	-01 22 05.31		22.23			~	2	0
108	[GH91] 197	GiC	13 11 36.52	-01 18 47.3	21.64	20.42	19.82	19.34	~	4	0
109	LEDA 88784	GiC	13 11 36.6	-01 22 56	20.15	19.14	18.48	17.93	~	9	0
110	SDSS J131137.04-012231.5	GiC	13 11 37.0450	-01 22 31.584	21.41	20.23	19.55	18.98	~	8	0
111	SDSS J131137.18-011706.9	GiC	13 11 37.1872040568	-01 17 07.005342984	20.51	19.11	18.41	17.81	~	6	0
112	LEDA 88788	GiC	13 11 37.40	-01 18 36.7	19.30	18.56			~	5	0
113	LEDA 2802293	rG	13 11 37.8598769088	-01 19 20.524735992	19.55	18.23	17.53	16.98	~	14	0
114	SDSS J131137.91-012237.1	GiC	13 11 37.9240131336	-01 22 37.177396320	20.90	19.58	18.92	18.35	~	9	0
115	2dFGRS TGN260Z045	rG	13 11 37.9802700504	-01 18 08.250394824	19.42	18.01	17.28	16.69	~	11	0
116	[BCS2002] 43	GiC	13 11 38.28	-01 21 05.6	19.86	18.75	18.18	17.68	~	6	0
117	[DPF2002] J131138.76-011908.2	G	13 11 38.76	-01 19 08.2	22.05	20.61			~	1	0
118	SDSS J131139.35-011649.1	rG	13 11 39.3610587720	-01 16 49.174211172	19.75	18.39	17.68	17.09	~	7	0
119	LEDA 2802297	GiC	13 11 39.47	-01 19 06.9	20.06	18.92	18.36	17.92	~	8	0
120	TCG ACO 1689 270	GiC	13 11 39.6211970040	-01 17 49.388753292	20.56	19.18	18.44	17.84	~	6	0
121	SDSS J131140.14-011951.5	Sy1	13 11 40.142	-01 19 51.52	19.65	19.04	18.65	18.20	~	11	0
122	LEDA 2802299	GiC	13 11 40.3316783112	-01 18 00.392283864	20.12	18.73	18.03	17.44	~	9	0
123	[DPF2002] J131141.83-011948.1	G	13 11 41.85	-01 19 47.6	21.19	19.94			~	3	0
124	FIRST J131143.4-011920	rG	13 11 43.4278735536	-01 19 19.543103400	19.34	17.91	17.19	16.59	~	18	0
125	ACO S 1077	ClG	22 58 52.34	-34 46 54.6					~	188	0

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