2011MNRAS.416..680C

Query : 2011MNRAS.416..680C

2011MNRAS.416..680C - Mon. Not. R. Astron. Soc., 416, 680-688 (2011/September-1)

Herschel-astrophysical terahertz large area survey: detection of a far-infrared population around galaxy clusters.

COPPIN K.E.K., GEACH J.E., SMAIL I., DUNNE L., EDGE A.C., IVISON R.J., MADDOX S., AULD R., BAES M., BUTTIGLIONE S., CAVA A., CLEMENTS D.L., COORAY A., DARIUSH A., DE ZOTTI G., DYE S., EALES S., FRITZ J., HOPWOOD R., IBAR E., JARVIS M., MICHALOWSKI M.J., MURPHY D.N.A., NEGRELLO M., PASCALE E., POHLEN M., RIGBY E., RODIGHIERO G., SCOTT D., SERJEANT S., SMITH D.J.B., TEMI P. and VAN DER WERF P.

Abstract (from CDS):

We report the detection of a significant excess in the surface density of far-infrared sources from the Herschel-Astrophysical Terahertz Large Area Survey within ∼ 1 Mpc of the centres of 66 optically selected clusters of galaxies in the Sloan Digital Sky Survey with <z> ∼ 0.25. From the analysis of the multiwavelength properties of their counterparts we conclude that the far-infrared emission is associated with dust-obscured star formation and/or active galactic nuclei (AGN) within galaxies in the clusters themselves. The excess reaches a maximum at a radius of ∼ 0.8 Mpc, where we find 1.0 ±0.3 S₂₅₀> 34 mJy sources on average per cluster above what would be expected for random field locations. If the far-infrared emission is dominated by star formation (as opposed to AGN) then this corresponds to an average star formation rate of ∼ 7 M_☉/yr per cluster in sources with L_IR> 5 {x} 10¹⁰ L_☉. Although lensed sources make a negligible contribution to the excess signal, a fraction of the sources around the clusters could be gravitationally lensed, and we have identified a sample of potential cases of cluster-lensed Herschel sources that could be targeted in follow-up studies.

Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): gravitational lensing: strong - galaxies: clusters: general - galaxies: evolution - galaxies: starburst - submillimetre: galaxies

Simbad objects: 26

Full paper

View the references in ADS

Number of rows : 26

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Sp type	#ref 1850 - 2024	#notes
1	ZwCl 0024+1652	ClG	00 26 35.6	+17 09 32			18.35	~	635	1
2	ACO 370	ClG	02 39 50.5	-01 35 08				~	747	0
3	ACO 3112	ClG	03 17 52.4	-44 14 35				~	311	1
4	ACO 426	ClG	03 19 47.2	+41 30 47				~	2258	1
5	ClG 0451-03	ClG	04 54 10.9	-03 01 07			20.0	~	352	0
6	ClG 0657-56	ClG	06 58 29.6	-55 56 39				~	963	1
7	SDP 1391	smm	09 01 42.612	+01 21 28.65				~	1	0
8	SDP 5642	smm	09 01 43.049	+01 22 24.67				~	1	0
9	SDP 2249	smm	09 04 05.746	+01 44 43.22				~	1	0
10	SDP 535	smm	09 06 20.316	+01 31 12.09				~	1	0
11	SDP 7399	smm	09 09 07.625	-00 12 09.90				~	1	0
12	SDP 2572	smm	09 10 14.875	-00 50 24.43				~	1	0
13	SDP 4689	smm	09 11 29.172	-00 22 37.42				~	1	0
14	SDP 1445	smm	09 11 30.919	-00 22 27.43				~	1	0
15	SDP 2331	smm	09 11 49.433	-00 04 25.00				~	1	0
16	SDP 1481	smm	09 12 31.438	-00 07 03.55				~	1	0
17	SDP 4357	smm	09 12 33.900	-00 43 37.17				~	1	0
18	SDP 5079	smm	09 13 09.641	-00 39 39.11				~	1	0
19	SDP 6622	smm	09 13 42.497	-00 46 14.51				~	1	0
20	H-ATLAS J091354.6-004539	G	09 13 54.6	-00 45 39				~	2	0
21	M 82	AGN	09 55 52.430	+69 40 46.93	9.61	9.30	8.41	~	5860	6
22	ACO 1689	ClG	13 11 29.5	-01 20 28				~	1125	0
23	ACO 1758	ClG	13 32 32.1	+50 30 37				~	251	2
24	IC 4553	SyG	15 34 57.22396	+23 30 11.6084		14.76	13.88	~	2961	4
25	ACO 2218	ClG	16 35 54.0	+66 13 00				~	809	1
26	NAME Cosmic Eye	G	21 35 12.730	-01 01 42.90				~	90	0

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