Journal
ASTRONOMY & ASTROPHYSICS
Volume 466, Issue 2, Pages L21-L24Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20077291
Keywords
galaxies : evolution; galaxies : dwarf; galaxies : bulges; galaxies : kinematics and dynamics; galaxies : elliptical and lenticular, cD
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Aims. Compact ellipticals are so rare that a search for M 32 analogs is needed to ensure the very existence of this class. Methods. We report here the discovery of A496cE, a M 32 twin in the cluster Abell 496, located in the halo of the central cD. Results. 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. Conclusions. The capture of A496cE by the cD galaxy and tidal stripping of most of its disc are briefly discussed.
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