2007A&A...466L..21C

Query : 2007A&A...466L..21C

2007A&A...466L..21C - Astronomy and Astrophysics, volume 466L21-24 (2007/5-1)

Discovery of a new M 32-like ``Compact Elliptical'' galaxy in the halo of the Abell 496 cD galaxy.

CHILINGARIAN I., CAYATTE V., CHEMIN L., DURRET F., LAGANA T.F., ADAMI C. and SLEZAK E.

Abstract (from CDS):

``Compact ellipticals'' are so rare that a search for M 32 analogs is needed to ensure the very existence of this class. We report here the discovery of A496cE, a M 32 twin in the cluster Abell 496, located in the halo of the central cD. Based on CFHT and HST imaging we show that the light profile of A496cE requires a two component fit: a Sersic bulge and an exponential disc. The spectrum of A496cE obtained with the ESO-VLT FLAMES/Giraffe spectrograph can be fit by a stellar synthesis spectrum dominated by old stars, with high values of [Mg/Fe] and velocity dispersion. The capture of A496cE by the cD galaxy and tidal stripping of most of its disc are briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: dwarf - galaxies: bulges - galaxies: kinematics and dynamics - galaxies: elliptical and lenticular, cD

Nomenclature: Text, Table 2: [CCC2007] ACO496JHHMMSS.ss+DDMMSS.s N=3, [CCC2007] A496cE N=1, [CCC2007] A496gN (Nos g1, g2).

Simbad objects: 15

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Number of rows : 15
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 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 LEDA 93410 GiC 04 33 32.0 -13 15 18     17.90     ~ 10 0
4 LEDA 3084811 GiC 04 33 37.3 -13 15 18           ~ 15 0
5 [CCD2008] ACO 496 J043338.22-131500.7 GiC 04 33 38.22 -13 15 00.7           ~ 3 0
6 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
7 NGC 3098 GiG 10 02 16.6969955520 +24 42 39.887384724   13.00       ~ 143 0
8 NGC 4379 GiG 12 25 14.7458757864 +15 36 26.755074576 13.05 12.63 11.72     ~ 239 1
9 NGC 4486B GiG 12 30 31.985 +12 29 24.85   14.5       ~ 428 0
10 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
11 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
12 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
13 NGC 5846A GiP 15 06 29.2023813744 +01 35 41.627266512   14.1 13.37 13.07 12.1 ~ 125 0
14 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
15 NAME Local Group GrG ~ ~           ~ 9325 0

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