2000ApJ...544L..35K

Query : 2000ApJ...544L..35K

2000ApJ...544L..35K - Astrophys. J., 544, L35-L39 (2000/November-3)

RX J0911+05: a massive cluster lens at z=0.769.

KNEIB J.-P., COHEN J.G. and HJORTH J.

Abstract (from CDS):

We report the detection of a massive high-redshift cluster of galaxies near the quadruple quasar RX J0911+05, using the Low-Resolution Imaging Spectrograph instrument on the Keck II telescope. The cluster is found to have a mean redshift of z{d1}=0.7689±0.002 and a velocity dispersion of σ=836+180–200 km.s–1, based on redshift measurements for 24 member galaxies. This massive high-redshift cluster is the origin of the unusually large external shear required by lensing models of the quadruple quasar system. We predict the expected time delay depending on the exact contribution of the cluster. A measurement of the time delay and further deep lensing and X-ray observations will unravel useful properties of this serendipitously discovered high-redshift cluster and may put interesting cosmological constraints on H0.

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Journal keyword(s): Galaxies: Clusters: General - Galaxies: Clusters: Individual: Alphanumeric: RX J0911.4+0551 - Cosmology: Gravitational Lensing

Nomenclature: Table 1, Fig.3: [KCH2000] GNN (Nos G1-G23), [KCH2000] LN (Nos L1-L2).

CDS comments: The cluster RX J0911+05 is ClG J0911+0550 in SIMBAD. Fig.3, b: [BCL98] RX J0911.4+0551 A1 to A3, B. [BCL98] RX J0911.4+0551 G = [KCH2000] L1 + L2.

Simbad objects: 40

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Number of rows : 40
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 SA 92- reg 00 55 03.80 +00 47 13.2           ~ 102 0
2 [KCH2000] G4 GiC 09 11 21.17 +05 49 39.8           ~ 1 0
3 [KCH2000] G5 GiC 09 11 21.40 +05 48 03.8           ~ 1 0
4 [KCH2000] G11 GiC 09 11 22.76 +05 48 29.9           ~ 1 0
5 [KCH2000] G10 GiC 09 11 22.93 +05 52 40.3           ~ 1 0
6 [KCH2000] G18 GiC 09 11 24.17 +05 49 35.2           ~ 1 0
7 [KCH2000] G9 GiC 09 11 26.39 +05 49 52.7           ~ 1 0
8 [KCH2000] G7 GiC 09 11 26.43 +05 50 07.7           ~ 1 0
9 [KCH2000] G8 GiC 09 11 26.45 +05 50 52.0           ~ 1 0
10 [KCH2000] G1 GiC 09 11 26.46 +05 50 14.5           ~ 1 0
11 ClG J0911+0550 ClG 09 11 26.5 +05 50 14           ~ 3 0
12 [KCH2000] G20 GiC 09 11 26.72 +05 50 17.6           ~ 1 0
13 [KCH2000] G21 GiC 09 11 26.74 +05 50 34.1           ~ 1 0
14 [KCH2000] G19 GiC 09 11 26.78 +05 50 19.0           ~ 1 0
15 [KCH2000] G2 GiC 09 11 27.29 +05 50 25.4           ~ 1 0
16 [BCL98] RX J0911.4+0551 B LeI 09 11 27.35 +05 50 53.6           ~ 22 0
17 [KCH2000] L2 GiC 09 11 27.50 +05 50 53.3           ~ 23 1
18 [BCL98] RX J0911.4+0551 A1 LeI 09 11 27.55 +05 50 52.8           ~ 33 0
19 [BCL98] RX J0911.4+0551 A3 LeI 09 11 27.55 +05 50 53.7           ~ 26 0
20 [KCH2000] G17 GiC 09 11 27.55 +05 51 03.4           ~ 1 0
21 JCMTSE J091127.6+055050 LeI 09 11 27.57 +05 50 53.2           ~ 22 0
22 QSO B0908+0603 QSO 09 11 27.6052 +05 50 54.281   18.44 18.16     ~ 248 2
23 [KCH2000] G14 GiC 09 11 27.79 +05 50 45.5           ~ 1 0
24 [KCH2000] G16 GiC 09 11 27.82 +05 50 41.2           ~ 1 0
25 [KCH2000] G22 GiC 09 11 27.98 +05 49 18.9           ~ 1 0
26 [KCH2000] G6 GiC 09 11 28.36 +05 51 07.9           ~ 1 0
27 [KCH2000] G3 GiC 09 11 28.92 +05 50 49.5           ~ 2 0
28 [KCH2000] G23 GiC 09 11 30.57 +05 51 13.4           ~ 1 0
29 [KCH2000] G12 GiC 09 11 30.61 +05 50 17.1           ~ 1 0
30 [KCH2000] G15 GiC 09 11 31.22 +05 51 26.6           ~ 1 0
31 [KCH2000] G13 GiC 09 11 31.59 +05 50 37.6           ~ 1 0
32 8C 0958+561 QSO 10 01 20.6918953728 +55 53 55.593949272   17.16 16.95     ~ 757 3
33 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
34 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 703 2
35 ClG 1137+66 ClG 11 40 23.0 +66 08 16     21.0     ~ 141 0
36 QSO J1415+1129 QSO 14 15 46.25 +11 29 43.4   17.63 17.23     ~ 678 0
37 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
38 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 137 0
39 ClG J2019+1127 ClG 20 19 18.0 +11 27 13           ~ 38 0
40 PG 2213-006 HS* 22 16 28.3762385784 -00 21 13.503339864 12.747 13.93 14.14 14.54 14.348 sdOB 79 0

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