2004A&A...428..741F

Query : 2004A&A...428..741F

2004A&A...428..741F - Astronomy and Astrophysics, volume 428, 741-755 (2004/12-4)

A search for clusters and groups of galaxies on the line of sight towards 8 lensed quasars.

FAURE C., ALLOIN D., KNEIB J.P. and COURBIN F.

Abstract (from CDS):

In this paper we present new ESO/VLT FORS1 and ISAAC images of the fields around eight gravitationally lensed quasars: CTQ 414, HE 0230-2130, LBQS 1009-0252, B 1030+074, HE 1104-1805, B 1359+154, H 1413+117 and HE 2149-2745. When available and deep enough, HST/WFPC2 data were also used to infer the photometric redshifts of the galaxies around the quasars. The search of galaxy overdensities in space and redshift, as well as a weak-shear analysis and a mass reconstruction are presented in this paper. We find that there are most probably galaxy groups towards CTQ 414, HE 0230-2130, B 1359+154, H 1413+117 and HE 2149-2745, with masses ≤4x1014M☉/h. Considering its photometric redshift, the galaxy group discovered in the field around HE 1104-1805 is associated with the quasar rather than with the lensing potential.

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Journal keyword(s): galaxies: clusters: general - gravitational lensing

Simbad objects: 24

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Number of rows : 24
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 NAME SGP reg 00 51 26.275 -27 07 41.70           ~ 567 0
2 NAME FDF reg 01 06 03.6 -25 45 46           ~ 125 0
3 NAME CTQ 414 Cluster ClG 01 58 41 -43 25.1           ~ 2 0
4 QSO J0158-4325 QSO 01 58 41.3988 -43 25 03.798   17.2 17.2     ~ 69 1
5 [MDM99] CTS 414 C G 01 58 41.47 -43 25 03.8           ~ 8 1
6 [VV2000] J023233.1-211726 QSO 02 32 33.1 -21 17 26     18.10     ~ 51 1
7 QSO B0908+0603 QSO 09 11 27.6052 +05 50 54.281   18.44 18.16     ~ 232 2
8 8C 0958+561 QSO 10 01 20.6918953728 +55 53 55.593949272   17.16 16.95     ~ 735 3
9 [LFK2000] 1009-0252 G G 10 12 -03.1           ~ 11 1
10 LBQS 1009-0252 QSO 10 12 15.89 -03 07 03.1   18.82 18.71     ~ 75 1
11 [LFK2000] 1030+074 G G 10 33 +07.1           ~ 17 1
12 QSO B1030+074 QSO 10 33 34.02429368 +07 11 26.1475933     20.34 20.22   ~ 107 1
13 [WKK93] G G 11 06 33.3 -18 21 23           ~ 35 1
14 QSO B1104-181 QSO 11 06 33.3845199936 -18 21 23.829049296   15.8 15.9 15.7   ~ 326 1
15 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 684 2
16 QSO B1359+154 QSO 14 01 35.588 +15 13 24.15     21.90     ~ 73 1
17 [KAP98] H1 G 14 15 46.22 +11 29 43.2           ~ 13 0
18 QSO J1415+1129 QSO 14 15 46.25 +11 29 43.4   17.63 17.23     ~ 650 0
19 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 450 1
20 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 356 0
21 QSO B1520+530 QSO 15 21 44.8 +52 54 49   18.2       ~ 122 2
22 NAME HE 2149-2745 Cluster ClG 21 52 07 -27 31.8           ~ 2 0
23 QSO B2149-2745 QSO 21 52 07.4534 -27 31 49.718   18.70 18.39     ~ 105 2
24 [WKL96] HE 2149-2745 G G 21 52 07.48 -27 31 49.3           ~ 23 1

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