2009A&A...498...37R


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.04CET11:55:39

2009A&A...498...37R - Astronomy and Astrophysics, volume 498, 37-47 (2009/4-4)

Keck spectroscopic survey of strongly lensed galaxies in Abell 1703: further evidence of a relaxed, unimodal cluster.

RICHARD J., PEI L., LIMOUSIN M., JULLO E. and KNEIB J.P.

Abstract (from CDS):

Strong gravitational lensing is a unique tool that can be used to accurately model the inner mass distribution of massive galaxy clusters. In particular, clusters with large Einstein radii provide a wealth of multiply imaged systems in the cluster core. Measuring the redshift of these multiple images provides strong constraints for precisely determining the shape of the central dark matter profile. This paper presents a spectroscopic survey of strongly lensed galaxies in the massive cluster lens Abell 1703, which displays a large Einstein radius (28" at z=2.8) and numerous strongly-lensed systems including a central ring-like configuration. We used the LRIS spectrograph on Keck to target multiple images and lensed galaxy candidates, and used the measured spectroscopic redshifts to constrain the mass distribution of the cluster using a parametric model. The spectroscopic data enable us to measure accurate redshifts for 7 sources at z>2, all of which are in good agreement with their photometric redshifts. We update the identification of multiply imaged systems by discovering 3 new systems and identifying a radial counter image. We also report the discovery of a remarkably bright ∼3.6L* i-band dropout at z=5.827 in our mask and it is only moderately magnified by the cluster (µ∼3.0±0.08). The improved parametric mass model, including 16 multiple systems with 10 spectroscopic redshifts, further constrains the smooth cluster-scale mass distribution with a generalized NFW profile of best-fit logarithmic slope α=0.92±0.04, concentration c200=4.72±0.40 and scale radius rs=476±45kpc. The overall rms in the image plane is 1.3". Our strong-lensing model allows us to predict a large-scale shear signal that is consistent with weak-lensing measurements inferred from Subaru data out to 4Mpc/h. Also considering the strong-lensing modeling requires a single dark matter clump, this suggests that Abell 1703 is a relaxed, unimodal cluster. This unique cluster could be probed further using deep X-ray, SZ, and dynamics analysis for a detailed study of the physics in a relaxed cluster.

Abstract Copyright:

Journal keyword(s): galaxies : high-redshift - galaxies: distances and redshifts - galaxies: clusters: individual: Abell 1703 - gravitational lensing

Nomenclature: Table 2: [RPL2009] NN (Nos 20, 21, 23), [RPL2009] galN-a N=22. Table 3: [LRK2008] NN.N N=12 added, [RPL2009] galN-a N=22.

CDS comments: Paragraph.1 MS 2053 is MS 2053.7-0449 in Simbad. Paragraph.3.3.4 CL0024 is probably ClG 0024+16. RX J1347 is RX J1347.5-1145. MS 2137 is ClG 2137-2353.

Simbad objects: 68

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Number of rows : 68

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ZwCl 0024+1652 ClG 00 26 36.0 +17 08 36     18.35     ~ 609 1
2 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 164 0
3 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1342 0
4 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1037 0
5 [RPL2009] gal24 G 13 15 00.26 +51 51 54.3           ~ 1 0
6 [RPL2009] gal23 G 13 15 01.06 +51 51 45.3           ~ 1 0
7 [RPL2009] 23 G 13 15 01.47 +51 48 26.5         27.20 ~ 4 0
8 [LRK2008] 9.3 LeI 13 15 01.95 +51 49 37.5         26.92 ~ 4 0
9 [LRK2008] 3.3 LeI 13 15 01.98 +51 49 47.4         25.34 ~ 3 0
10 [LRK2008] 8.3 LeI 13 15 02.07 +51 49 38.6         25.07 ~ 4 0
11 [LRK2008] 12.3 LeI 13 15 02.081 +51 49 35.34         26.33 ~ 2 0
12 [LRK2008] 7.3 LeI 13 15 02.09 +51 49 41.3         26.81 ~ 4 0
13 [RPL2009] 21 G 13 15 02.40 +51 50 04.2         22.57 ~ 1 0
14 [LRK2008] 5.2 LeI 13 15 02.50 +51 49 29.6           ~ 5 0
15 [LRK2008] 4.2 LeI 13 15 02.58 +51 49 29.5           ~ 5 0
16 [LRK2008] 11.3 LeI 13 15 02.98 +51 48 34.3         23.55 ~ 4 0
17 [LRK2008] 15.1 LeI 13 15 03.08 +51 48 44.9         24.89 ~ 5 0
18 [LRK2008] 16.1 LeI 13 15 03.25 +51 48 41.9           ~ 5 0
19 [LRK2008] 14.3 LeI 13 15 03.473 +51 48 43.89         26.33 ~ 2 0
20 [LRK2008] 12.2 LeI 13 15 03.763 +51 49 43.17         24.47 ~ 2 0
21 [RPL2009] gal4 G 13 15 03.83 +51 51 32.5         24.16 ~ 1 0
22 [LRK2008] 8.2 LeI 13 15 03.86 +51 49 46.2         23.06 ~ 4 0
23 [RPL2009] 20 G 13 15 03.98 +51 50 10.5         21.86 ~ 1 0
24 [LRK2008] 9.2 LeI 13 15 04.06 +51 49 46.5         25.32 ~ 4 0
25 [LRK2008] 13.4 LeI 13 15 04.061 +51 48 54.47         25.12 ~ 2 0
26 [LRK2008] 3.1 LeI 13 15 04.07 +51 49 55.4         22.69 ~ 4 0
27 [RPL2009] gal11-a G 13 15 04.25 +51 47 48.4         22.86 ~ 1 0
28 [RPL2009] gal11-b G 13 15 04.26 +51 47 50.8           ~ 2 0
29 [LRK2008] 13.2 LeI 13 15 04.310 +51 49 06.15         24.18 ~ 2 0
30 [LRK2008] 14.2 LeI 13 15 04.483 +51 49 12.69         25.40 ~ 2 0
31 [LRK2008] 2.3 LeI 13 15 04.73 +51 48 42.7         26.15 ~ 5 0
32 [RPL2009] gal19-b G 13 15 04.95 +51 46 09.7           ~ 1 0
33 [RPL2009] gal19-a G 13 15 05.04 +51 46 06.3           ~ 2 0
34 [LRK2008] 2.2 LeI 13 15 05.17 +51 48 42.3         25.29 ~ 5 0
35 ACO 1703 ClG 13 15 05.2 +51 49 02           ~ 124 0
36 [LRK2008] 10.4 LeI 13 15 05.22 +51 49 08.6         24.77 ~ 2 0
37 [LRK2008] 9.1 LeI 13 15 05.22 +51 49 49.1         26.68 ~ 4 0
38 [LRK2008] 13.3 LeI 13 15 05.290 +51 48 53.90         26.29 ~ 2 0
39 [RPL2009] gal22-b G 13 15 05.37 +51 45 36.8           ~ 2 0
40 [RPL2009] gal22-a G 13 15 05.39 +51 45 31.5           ~ 1 0
41 [LRK2008] 8.1 LeI 13 15 05.40 +51 49 49.6         24.95 ~ 4 0
42 [LRK2008] 12.1 LeI 13 15 05.894 +51 49 47.81         26.68 ~ 2 0
43 [RPL2009] gal13-b G 13 15 06.04 +51 47 19.4         23.45 ~ 1 0
44 [RPL2009] gal13-a G 13 15 06.10 +51 47 17.1           ~ 1 0
45 [LRK2008] 14.4 LeI 13 15 06.096 +51 48 43.00         26.30 ~ 2 0
46 [RPL2009] gal3 G 13 15 06.527 +51 51 00.44           ~ 2 0
47 [BHG2011] A1703 A2 LeG 13 15 06.54 +51 49 09.6         22.19 ~ 6 0
48 [RPL2009] gal12 G 13 15 06.65 +51 47 40.6         25.32 ~ 1 0
49 [LRK2008] 6.1 LeI 13 15 07.16 +51 49 35.0         23.56 ~ 4 0
50 [RPL2009] gal1 G 13 15 07.57 +51 50 23.0           ~ 1 0
51 [LRK2008] 13.1 LeI 13 15 07.771 +51 49 16.33         26.93 ~ 2 0
52 [RPL2009] gal14 G 13 15 08.77 +51 47 08.7           ~ 1 0
53 [LRK2008] 14.1 LeI 13 15 08.789 +51 49 13.95         25.55 ~ 2 0
54 [RPL2009] gal21 G 13 15 08.89 +51 45 45.5           ~ 2 0
55 [LRK2008] 10.1 LeI 13 15 08.90 +51 48 51.3         21.40 ~ 5 0
56 [RPL2009] gal18-a G 13 15 09.01 +51 46 22.8           ~ 2 0
57 [RPL2009] gal2 G 13 15 09.15 +51 50 33.9         20.49 ~ 1 0
58 [RPL2009] gal18-b G 13 15 09.16 +51 46 25.1           ~ 1 0
59 [LRK2008] 15.3 LeI 13 15 09.17 +51 49 18.3         25.44 ~ 5 0
60 [LRK2008] 16.3 LeI 13 15 09.21 +51 49 15.5           ~ 5 0
61 [RPL2009] gal17 G 13 15 09.76 +51 46 15.5           ~ 1 0
62 [RPL2009] gal20 G 13 15 11.12 +51 45 57.7           ~ 2 0
63 [RPL2009] gal16 G 13 15 11.28 +51 46 33.8           ~ 1 0
64 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 483 0
65 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 385 0
66 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 782 1
67 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 162 0
68 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 352 0

    Equat.    Gal    SGal    Ecl

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2021.03.04-11:55:39

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