2011ApJ...742...48B

Query : 2011ApJ...742...48B

2011ApJ...742...48B - Astrophys. J., 742, 48 (2011/November-3)

The serendipitous observation of a gravitationally lensed galaxy at z = 0.9057 from the Blanco Cosmology Survey: the Elliot Arc.

BUCKLEY-GEER E.J., LIN H., DRABEK E.R., ALLAM S.S., TUCKER D.L., ARMSTRONG R., BARKHOUSE W.A., BERTIN E., BRODWIN M., DESAI S., FRIEMAN J.A., HANSEN S.M., HIGH F.W., MOHR J.J., LIN Y.-T., NGEOW C.-C., REST A., SMITH R.C., SONG J. and ZENTENO A.

Abstract (from CDS):

We report on the serendipitous discovery in the Blanco Cosmology Survey (BCS) imaging data of a z = 0.9057 galaxy that is being strongly lensed by a massive galaxy cluster at a redshift of z = 0.3838. The lens (BCS J2352-5452) was discovered while examining i- and z-band images being acquired in 2006 October during a BCS observing run. Follow-up spectroscopic observations with the Gemini Multi-Object Spectrograph instrument on the Gemini-South 8 m telescope confirmed the lensing nature of this system. Using weak-plus-strong lensing, velocity dispersion, cluster richness N200, and fitting to a Navarro-Frenk-White (NFW) cluster mass density profile, we have made three independent estimates of the mass M200 which are all very consistent with each other. The combination of the results from the three methods gives M 200= (5.1±1.3)x1014 M☉, which is fully consistent with the individual measurements. The final NFW concentration c200 from the combined fit is c200= 5.4+1.4_- 1.1_. We have compared our measurements of M200 and c200with predictions for (1) clusters from ΛCDM simulations, (2) lensing-selected clusters from simulations, and (3) a real sample of cluster lenses. We find that we are most compatible with the predictions for ΛCDM simulations for lensing clusters, and we see no evidence based on this one system for an increased concentration compared to ΛCDM. Finally, using the flux measured from the [O II]3727 line we have determined the star formation rate of the source galaxy and find it to be rather modest given the assumed lens magnification.

Abstract Copyright: ∼

Journal keyword(s): galaxies: high-redshift - gravitational lensing: strong - gravitational lensing: weak

VizieR on-line data: <Available at CDS (J/ApJ/742/48): table3.dat table4.dat>

Nomenclature: [BLD2011] galaxy N=1. Fig. 2, Table 2: [BLD2011] AN (Nos A1-A4). Tables 3-4: [BLD2011] NNNNN N=94+12 among (Nos 10692-19588).

Simbad objects: 116

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Number of rows : 116
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 NAME 8 O'Clock Arc blu 00 22 40.77984 +14 31 13.9548           ~ 66 0
2 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 299 0
3 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
4 NAME the Clone gLS 12 06 02.09 +51 42 29.5           ~ 45 0
5 [BLD2011] 14267 G 23 50 58.137 -54 53 51.23           ~ 1 0
6 [BLD2011] 13939 G 23 50 58.444 -54 54 12.39           ~ 1 0
7 [BLD2011] 15994 G 23 51 03.171 -54 51 21.19           ~ 1 0
8 [BLD2011] 13874 G 23 51 04.133 -54 54 17.14           ~ 1 0
9 [BLD2011] 18418 G 23 51 04.400 -54 48 06.70           ~ 1 0
10 [BLD2011] 13629 G 23 51 07.580 -54 54 41.38           ~ 1 0
11 [BLD2011] 12589 G 23 51 08.540 -54 56 00.07           ~ 1 0
12 [BLD2011] 11254 G 23 51 10.162 -54 58 07.08           ~ 1 0
13 [BLD2011] 10692 G 23 51 16.586 -54 58 54.21           ~ 1 0
14 [BLD2011] 13901 GiC 23 51 17.767 -54 54 07.79           ~ 2 0
15 [BLD2011] 14086 GiC 23 51 18.979 -54 53 50.99           ~ 2 0
16 [BLD2011] 13028 GiC 23 51 20.855 -54 55 25.39           ~ 2 0
17 [BLD2011] 13772 GiC 23 51 24.967 -54 54 29.08           ~ 2 0
18 [BLD2011] 11813 G 23 51 25.518 -54 57 27.71           ~ 1 0
19 [BLD2011] 14828 GiC 23 51 26.030 -54 53 02.72           ~ 2 0
20 [BLD2011] 14703 GiC 23 51 27.599 -54 53 04.89           ~ 2 0
21 [BLD2011] 15400 GiC 23 51 27.905 -54 52 14.75           ~ 3 0
22 [BLD2011] 14505 GiC 23 51 28.805 -54 53 17.92           ~ 3 0
23 [BLD2011] 14939 GiC 23 51 29.344 -54 52 42.43           ~ 2 0
24 [BLD2011] 15187 GiC 23 51 29.775 -54 52 26.10           ~ 3 0
25 [BLD2011] 12863 GiC 23 51 29.831 -54 55 36.78           ~ 2 0
26 [BLD2011] 17729 G 23 51 30.086 -54 49 01.18           ~ 1 0
27 [BLD2011] 14378 GiC 23 51 30.145 -54 53 31.52           ~ 2 0
28 [BLD2011] 15027 GiC 23 51 31.384 -54 52 41.70           ~ 3 0
29 [BLD2011] 15463 GiC 23 51 31.874 -54 52 06.25           ~ 3 0
30 [BLD2011] 13520 G 23 51 33.025 -54 54 40.78           ~ 2 0
31 [BLD2011] 13620 G 23 51 33.430 -54 54 34.10           ~ 2 0
32 [BLD2011] 16409 G 23 51 33.632 -54 50 46.48           ~ 2 0
33 [BLD2011] 15156 G 23 51 33.926 -54 52 29.47           ~ 1 0
34 [BLD2011] 15525 GiC 23 51 33.951 -54 52 02.00           ~ 3 0
35 [BLD2011] 11976 G 23 51 34.338 -54 57 05.02           ~ 1 0
36 [BLD2011] 15313 G 23 51 34.444 -54 52 32.84           ~ 2 0
37 [BLD2011] 14193 GiC 23 51 34.8496572912 -54 54 07.270638156           ~ 3 0
38 [BLD2011] 14875 GiC 23 51 35.125 -54 52 50.71           ~ 2 0
39 [BLD2011] 15002 GiC 23 51 35.358 -54 52 40.62           ~ 3 0
40 [BLD2011] 15697 GiC 23 51 35.482 -54 51 46.97           ~ 3 0
41 [BLD2011] 14271 GiC 23 51 35.821 -54 53 47.64           ~ 3 0
42 [BLD2011] 14844 G 23 51 35.944 -54 52 49.69           ~ 1 0
43 [BLD2011] 14664 GiC 23 51 36.272 -54 53 06.40           ~ 2 0
44 [BLD2011] 14843 G 23 51 36.274 -54 52 50.78           ~ 1 0
45 ACT-CL J2351.6-5452 ClG 23 51 36.4073 -54 52 51.379           ~ 20 0
46 [BLD2011] 14800 G 23 51 36.410 -54 52 51.09           ~ 1 0
47 [BLD2011] 19257 G 23 51 36.585 -54 51 05.68           ~ 2 0
48 [BLD2011] 19352 G 23 51 36.607 -54 51 07.52           ~ 2 0
49 [BLD2011] 15314 GiC 23 51 36.635 -54 52 19.60           ~ 3 0
50 [BLD2011] 16682 G 23 51 36.876 -54 50 27.25           ~ 2 0
51 [BLD2011] 14232 GiC 23 51 37.118 -54 53 42.78           ~ 3 0
52 [BLD2011] 13697 GiC 23 51 37.323 -54 54 27.03           ~ 3 0
53 [BLD2011] 13764 GiC 23 51 37.346 -54 54 22.71           ~ 2 0
54 [BLD2011] A3 LeG 23 51 37.494 -54 53 00.47           ~ 1 0
55 [BLD2011] 14620 GiC 23 51 37.513 -54 53 07.63           ~ 3 0
56 [BLD2011] A4 LeG 23 51 37.704 -54 52 47.88           ~ 1 0
57 [BLD2011] galaxy G 23 51 38 -54 52.9           ~ 1 0
58 DES J235138.05-545254.0 GiC 23 51 38.056 -54 52 54.03           ~ 5 0
59 [BLD2011] 15403 GiC 23 51 38.134 -54 52 13.61           ~ 3 0
60 [BLD2011] 14972 G 23 51 38.288 -54 52 41.56           ~ 1 0
61 [BLD2011] 14466 GiC 23 51 38.301 -54 53 27.03           ~ 3 0
62 [BLD2011] 14969 GiC 23 51 38.491 -54 52 42.76           ~ 2 0
63 [BLD2011] 15111 GiC 23 51 38.721 -54 52 47.52           ~ 2 0
64 [BLD2011] A2 LeG 23 51 38.752 -54 52 58.08           ~ 1 0
65 [BLD2011] 16570 G 23 51 38.850 -54 50 35.13           ~ 2 0
66 [BLD2011] A1 LeG 23 51 38.994 -54 52 54.09           ~ 1 0
67 [BLD2011] 14873 GiC 23 51 39.206 -54 52 59.45           ~ 2 0
68 [BLD2011] 14944 G 23 51 39.321 -54 52 40.14           ~ 1 0
69 [BLD2011] 14690 GiC 23 51 39.359 -54 53 02.15           ~ 2 0
70 [BLD2011] 14595 G 23 51 39.411 -54 53 10.64           ~ 1 0
71 [BLD2011] 14727 GiC 23 51 39.444 -54 53 04.58           ~ 2 0
72 [BLD2011] 15788 GiC 23 51 39.470 -54 51 39.23           ~ 3 0
73 [BLD2011] 14492 GiC 23 51 39.540 -54 53 18.67           ~ 3 0
74 [BLD2011] 15124 GiC 23 51 39.680 -54 52 38.42           ~ 3 0
75 [BLD2011] 14669 GiC 23 51 39.966 -54 53 08.53           ~ 3 0
76 [BLD2011] 14892 GiC 23 51 40.093 -54 52 52.01           ~ 2 0
77 [BLD2011] 14407 GiC 23 51 40.097 -54 53 29.41           ~ 3 0
78 [BLD2011] 13372 GiC 23 51 40.167 -54 54 51.97           ~ 3 0
79 [BLD2011] 15204 GiC 23 51 40.312 -54 52 29.54           ~ 3 0
80 [BLD2011] 14458 GiC 23 51 41.489 -54 53 29.14           ~ 3 0
81 [BLD2011] 14825 GiC 23 51 41.510 -54 52 50.92           ~ 2 0
82 [BLD2011] 15056 GiC 23 51 43.021 -54 52 42.49           ~ 2 0
83 [BLD2011] 15305 GiC 23 51 43.149 -54 52 28.55           ~ 2 0
84 [BLD2011] 15516 G 23 51 43.670 -54 52 01.69           ~ 2 0
85 [BLD2011] 16084 G 23 51 43.798 -54 51 18.69           ~ 2 0
86 [BLD2011] 12875 GiC 23 51 44.610 -54 55 38.95           ~ 2 0
87 [BLD2011] 14088 GiC 23 51 44.644 -54 53 53.13           ~ 3 0
88 [BLD2011] 13537 GiC 23 51 44.973 -54 54 40.79           ~ 3 0
89 [BLD2011] 15509 GiC 23 51 45.949 -54 52 09.34           ~ 3 0
90 [BLD2011] 14169 G 23 51 46.189 -54 53 49.07           ~ 1 0
91 [BLD2011] 14741 GiC 23 51 46.508 -54 53 03.72           ~ 2 0
92 [BLD2011] 12805 G 23 51 47.433 -54 55 46.55           ~ 1 0
93 [BLD2011] 16562 G 23 51 47.699 -54 50 30.81           ~ 2 0
94 [BLD2011] 14685 GiC 23 51 47.738 -54 53 07.31           ~ 2 0
95 [BLD2011] 14639 GiC 23 51 49.053 -54 53 08.61           ~ 2 0
96 [BLD2011] 14827 GiC 23 51 49.508 -54 52 59.22           ~ 2 0
97 [BLD2011] 15827 G 23 51 49.825 -54 51 38.14           ~ 2 0
98 [BLD2011] 12650 GiC 23 51 49.925 -54 55 54.74           ~ 2 0
99 [BLD2011] 13423 G 23 51 50.593 -54 54 49.77           ~ 2 0
100 [BLD2011] 19588 G 23 51 50.657 -54 46 36.21           ~ 1 0
101 [BLD2011] 15373 GiC 23 51 51.834 -54 52 27.64           ~ 3 0
102 [BLD2011] 12907 GiC 23 51 53.226 -54 55 36.88           ~ 2 0
103 [BLD2011] 16097 GiC 23 51 53.3543002560 -54 51 23.775811992           ~ 2 0
104 [BLD2011] 15333 GiC 23 51 54.046 -54 52 19.82           ~ 2 0
105 [BLD2011] 19279 G 23 51 57.190 -54 47 04.53           ~ 1 0
106 [BLD2011] 14954 GiC 23 51 57.744 -54 52 54.59           ~ 2 0
107 [BLD2011] 16005 GiC 23 51 58.024 -54 51 23.05           ~ 2 0
108 [BLD2011] 12997 GiC 23 51 58.305 -54 55 31.20           ~ 2 0
109 [BLD2011] 17455 G 23 51 59.309 -54 49 21.63           ~ 1 0
110 [BLD2011] 13899 GiC 23 52 00.905 -54 54 08.41           ~ 2 0
111 [BLD2011] 12892 G 23 52 03.425 -54 55 35.26           ~ 1 0
112 [BLD2011] 12671 G 23 52 13.299 -54 55 53.70           ~ 1 0
113 [BLD2011] 18026 G 23 52 13.446 -54 48 36.93           ~ 1 0
114 [BLD2011] 17276 G 23 52 14.846 -54 49 37.88           ~ 1 0
115 [BLD2011] 16926 G 23 52 16.575 -54 50 16.85           ~ 1 0
116 [BLD2011] 15068 G 23 52 22.644 -54 52 35.07           ~ 1 0

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