2008MNRAS.389..311O

Query : 2008MNRAS.389..311O

2008MNRAS.389..311O - Mon. Not. R. Astron. Soc., 389, 311-314 (2008/September-1)

SDSS J120923.7+264047: a new massive galaxy cluster with a bright giant arc.

OFEK E.O., SEITZ S. and KLEIN F.

Abstract (from CDS):

Highly magnified lensed galaxies allow us to probe the morphological and spectroscopic properties of high-redshift stellar systems in great detail. However, such objects are rare, and there are only a handful of lensed galaxies that are bright enough for a high-resolution spectroscopic study with current instrumentation. We report the discovery of a new massive lensing cluster, SDSSJ120923.7+264047, at z = 0.558. Present around the cluster core, at angular distances of up to ∼40 arcsec, are many arcs and arc candidates, presumably due to lensing of background galaxies by the cluster gravitational potential. One of the arcs, 21 arcsec long, has an r-band magnitude of 20, making it one of the brightest known lensed galaxies. We obtained a low-resolution spectrum of this galaxy, using the Keck-I telescope, and found it is at redshift of z = 1.018.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): gravitational lensing - galaxies: clusters: individual: SDSSJ120923.7+264047 - galaxies: high-redshift

Nomenclature: [OSK2008] SDSS J120923.7+264047 N=1. Fig.1, Table 1: [OSK2008] AN (Nos A-K), N=18. Fig.1, Text: [OSK2008] cgN (Nos cg1-cg3), [OSK2008] cqN (No. cq1).

CDS comments: The lensing cluster = ClG J1209+2640 in SIMBAD.

Simbad objects: 27

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Number of rows : 27
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 HZ 2 WD* 04 12 43.5550038936 +11 51 48.978942012 12.903 13.787 13.877 13.984 14.094 DA2.3 110 0
2 SDSS J120920.61+264041.2 QSO 12 09 20.6044151832 +26 40 41.213598132   19.88 19.64     ~ 16 0
3 [OSK2008] E LeG 12 09 21.22 +26 40 45.8           ~ 2 0
4 [BHG2011] SDSS J1209+2640 C1 LeG 12 09 21.936 +26 40 56.79           ~ 3 0
5 [OSK2008] D LeG 12 09 22.04 +26 40 46.5           ~ 2 0
6 [BHG2011] SDSS J1209+2640 C2 LeG 12 09 22.310 +26 41 04.95           ~ 3 0
7 [OSK2008] H2 LI? 12 09 22.817 +26 40 23.35           ~ 2 0
8 [OSK2008] I LeI 12 09 23.38 +26 40 13.2           ~ 1 0
9 SDSS J120923.60+264059.9 G 12 09 23.60 +26 40 59.9           ~ 1 0
10 [OSK2008] H1 LeI 12 09 23.65 +26 40 20.2           ~ 1 0
11 SDSS J120923.68+264046.7 BiC 12 09 23.687 +26 40 46.73           ~ 10 0
12 CSWA 8 gLS 12 09 23.7 +26 40 47           ~ 8 0
13 SDSSCGB 41791 CGG 12 09 23.69 +26 40 46.7           ~ 33 0
14 [OSK2008] B LeG 12 09 24.00 +26 40 49.9           ~ 2 0
15 [OSK2008] A LeG 12 09 24.0 +26 40 51           ~ 5 0
16 [OSK2008] K LeI 12 09 24.10 +26 40 03.6           ~ 1 0
17 [OSK2008] J LeI 12 09 24.17 +26 40 12.6           ~ 1 0
18 [OSK2008] A1 LeI 12 09 24.223 +26 40 54.08           ~ 2 0
19 [OSK2008] A2 LeI 12 09 24.360 +26 40 52.19           ~ 2 0
20 SDSS J120924.41+264057.8 G 12 09 24.413 +26 40 57.84           ~ 3 0
21 [OSK2008] A3 LeI 12 09 24.46 +26 40 49.1           ~ 1 0
22 [OSK2008] A4 LeI 12 09 24.502 +26 40 45.90           ~ 2 0
23 [OSK2008] F1 LeI 12 09 24.94 +26 40 53.5           ~ 1 0
24 [OSK2008] F2 LeI 12 09 24.96 +26 40 51.6           ~ 1 0
25 [OSK2008] G LeI 12 09 25.06 +26 40 54.5           ~ 1 0
26 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
27 NAME MS 1512-cB58 AGN 15 14 22.2751 +36 36 25.674     20.64   20.35 ~ 326 0

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