2007AJ....134..668A

Query : 2007AJ....134..668A

2007AJ....134..668A - Astron. J., 134, 668-679 (2007/August-0)

The gravitational lens-galaxy group connection. II. Groups associated with B2319+051 and B1600+434.

AUGER M.W., FASSNACHT C.D., ABRAHAMSE A.L., LUBIN L.M. and SQUIRES G.K.

Abstract (from CDS):

We report on the results of a spectroscopic survey of the environments of the gravitational lens systems CLASS B1600+434 (zl=0.41,zs=1.59) and CLASS B2319+051 (zl=0.62). The B1600+434 system has a time delay measured for it, and we find that the system lies in a group with a velocity dispersion of 90 km/s and at least seven members. B2319+051 has a large group in its immediate foreground with at least 10 members and a velocity dispersion of 460 km/s and another in the background of the lens with a velocity dispersion of 190 km/s. These systems increase the sample of spectroscopically confirmed groups associated with strong lenses by 20%. We find that modeling groups as single group-sized halos produces only small corrections (κenv,grp∼0.01) to lensing models. However, the very local environments, i.e., galaxies within ∼15" of the lensing galaxy, have stronger effects on the lens models of the systems studied here. We quantify the effects of the local environment on the lens models and find up to an ~10% correction to the derived value of H0 for B1600+434 compared to models that do not account for the lens environment.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Distance Scale - Galaxies: Clusters: General - galaxies: individual (B2319+051) - galaxies: individual (B1600+434) - Gravitational Lensing

Nomenclature: Table 3: [AFA2007] JHHMMSS+DDMMSS N=8. Table 4: [AFA2007] 1600-1 N (Nos 1-7). Table 5: [AFA2007] 2319-1 NN (Nos 1-10).Table 6: [AFA2007] 2319-2 N (Nos 1-8).

Simbad objects: 46

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Number of rows : 46
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [VV2006] J043814.8-122314 QSO 04 38 14.88 -12 17 14.6     17.15     ~ 245 2
2 QSO B0712+472 QSO 07 16 03.64335360 +47 08 50.2272600     23.0     ~ 116 2
3 QSO J0751+2716 QSO 07 51 41.517 +27 16 31.79     18.7     ~ 86 2
4 QSO B0952-0115 QSO 09 55 00.1037541106 -01 30 06.549307797     18.7     ~ 150 0
5 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 703 2
6 4C 05.51 rG 11 31 56.493 +04 55 48.85           ~ 123 1
7 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 464 1
8 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 359 0
9 [AFA2007] 1600-1 6 GiG 16 01 36.19 +43 15 22.9   23.32   21.78 21.35 ~ 3 0
10 [AFA2007] 1600-1 7 GiG 16 01 37.72 +43 16 35.5   24.03   21.87 21.13 ~ 3 0
11 [AFA2007] J160139+431511 GrG 16 01 39.0 +43 15 11           ~ 1 0
12 [AFA2007] 1600-1 3 GiG 16 01 39.59 +43 16 47.7   23.60   21.39 20.54 ~ 3 0
13 NAME B1600+434 Group GrG 16 01 40.0 +43 16 48           ~ 2 0
14 [AFA2007] J160140+431800 GrG 16 01 40.0 +43 18 00           ~ 1 0
15 QSO B1600+4344 QSO 16 01 40.4818 +43 16 47.394   22.12 21.92     ~ 188 1
16 [AFA2007] 1600-1 1 GiG 16 01 40.50 +43 16 47.2   21.50   19.91 19.22 ~ 3 0
17 [AFA2007] 1600-1 2 GiG 16 01 40.839 +43 16 44.48   21.84   19.61 18.87 ~ 4 0
18 [AFA2007] 1600-1 5 GiG 16 01 41.83 +43 18 03.6   23.36   24.04 23.76 ~ 1 0
19 [AFA2007] 1600-1 4 G 16 01 42.83 +43 17 00.2   23.60   21.96 21.53 ~ 3 0
20 [AFA2007] J160149+431724 GrG 16 01 49.0 +43 17 24           ~ 1 0
21 NAME 3C 330G2 Sy2 16 09 34.92456720 +65 56 37.8351240   20.33       ~ 280 1
22 QSO J1654+1346 QSO 16 54 41.7895558608 +13 46 21.369503604     20.93     ~ 82 1
23 PKS 2114+022 Rad 21 16 50.74522099 +02 25 46.2623664           ~ 59 1
24 [AFA2007] 2319-2 1 GiG 23 21 37.17 +05 25 57.2   25.95 24.72   22.13 ~ 1 0
25 [AFA2007] 2319-1 1 GiG 23 21 37.25 +05 25 09.2   24.28 23.61   21.85 ~ 1 0
26 [AFA2007] 2319-1 3 GiG 23 21 37.54 +05 26 22.1   23.27 22.39   20.39 ~ 1 0
27 [AFA2007] 2319-1 7 GiG 23 21 38.23 +05 27 38.3   23.27 21.70   19.11 ~ 1 0
28 [AFA2007] 2319-1 4 GiG 23 21 38.24 +05 27 11.3   23.96 22.09   19.59 ~ 1 0
29 [AFA2007] 2319-1 8 GiG 23 21 38.41 +05 27 33.2   24.97 23.12   20.45 ~ 1 0
30 [AFA2007] 2319-1 9 GiG 23 21 38.82 +05 27 31.5   25.73 24.47   22.31 ~ 1 0
31 NAME B2319+051 Foreground Group GrG 23 21 39.0 +05 26 52           ~ 1 0
32 [AFA2007] 2319-2 8 GiG 23 21 39.16 +05 28 29.3   24.08 23.55   21.92 ~ 1 0
33 [AFA2007] 2319-1 5 GiG 23 21 39.39 +05 27 19.2   26.12 23.94   21.51 ~ 1 0
34 [AFA2007] 2319-2 2 GiG 23 21 39.98 +05 26 07.8   23.97 23.69   22.65 ~ 1 0
35 [AFA2007] J232140+052621 GrG 23 21 40.0 +05 26 21           ~ 1 0
36 NAME B2319+051 Background Group GrG 23 21 40.0 +05 26 48           ~ 1 0
37 [AFA2007] 2319-1 10 GiG 23 21 40.61 +05 27 38.2   25.08 23.55   21.11 ~ 1 0
38 [AFA2007] 2319-2 3 GiG 23 21 40.65 +05 26 27.7   25.31 23.36   20.93 ~ 1 0
39 [AFA2007] 2319-1 6 GiG 23 21 40.73 +05 27 23.9   24.24 23.94   22.75 ~ 1 0
40 FIRST J232140.7+052737 Rad 23 21 40.801 +05 27 37.23           ~ 29 1
41 [AFA2007] J232141+052743 GrG 23 21 41.0 +05 27 43           ~ 1 0
42 [AFA2007] 2319-2 7 GiG 23 21 41.97 +05 26 56.4   25.05 24.45   22.82 ~ 1 0
43 [AFA2007] 2319-2 5 GiG 23 21 41.99 +05 26 40.0           ~ 1 0
44 [AFA2007] 2319-2 4 GiG 23 21 41.99 +05 26 40.0   23.79 22.13   19.31 ~ 1 0
45 [AFA2007] 2319-2 6 GiG 23 21 43.02 +05 26 48.7   25.87 24.43   21.71 ~ 1 0
46 [AFA2007] 2319-1 2 GiG 23 21 43.37 +05 25 43.9   24.47 23.01   20.70 ~ 1 0

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