2010ApJ...715L.160C

Query : 2010ApJ...715L.160C

2010ApJ...715L.160C - Astrophys. J., 715, L160-L164 (2010/June-1)

Strong gravitational lensing by the super-massive cD galaxy in Abell 3827.

CARRASCO E.R., GOMEZ P.L., VERDUGO T., LEE H., DIAZ R., BERGMANN M., TURNER J.E.H., MILLER B.W. and WEST M.J.

Abstract (from CDS):

We have discovered strong gravitational lensing features in the core of the nearby cluster Abell 3827 by analyzing Gemini South GMOS images. The most prominent strong lensing feature is a highly magnified, ring-shaped configuration of four images around the central cD galaxy. GMOS spectroscopic analysis puts this source at z ∼ 0.2. Located ∼20'' away from the central galaxy is a secondary tangential arc feature which has been identified as a background galaxy with z ∼ 0.4. We have modeled the gravitational potential of the cluster core, taking into account the mass from the cluster, the brightest cluster galaxy (BCG), and other galaxies. We derive a total mass of (2.7 ±0.4)x1013 M☉ within 37 h–1 kpc. This mass is an order of magnitude larger than that derived from X-ray observations. The total mass derived from lensing data suggests that the BCG in this cluster is perhaps the most massive galaxy in the nearby universe.

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Journal keyword(s): galaxies: clusters: individual: Abell 3827 - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - gravitational lensing: strong

Nomenclature: Fig. 1, Table 1: [CGV2010] AN (Nos N1-N5, A1-A4, B1).

Simbad objects: 10

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Number of rows : 10
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 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
2 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
3 ACO 3827 ClG 22 01 49.1 -59 57 15           ~ 178 0
4 [CGV2010] N6 GiC 22 01 51.51 -59 56 42.3           ~ 5 0
5 [CGV2010] N3 G 22 01 52.690 -59 56 41.22           ~ 6 0
6 [CGV2010] N4 G 22 01 52.760 -59 56 46.12           ~ 6 0
7 [CGV2010] N5 * 22 01 52.790 -59 56 37.73           ~ 3 0
8 [CGV2010] N2 G 22 01 53.310 -59 56 43.14           ~ 6 0
9 ESO 146-5 BiC 22 01 53.3696815056 -59 56 43.468628928   15.75   13.80   ~ 11 0
10 [CGV2010] N1 G 22 01 53.990 -59 56 45.14           ~ 9 0

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