A new Compact Elliptical galaxy in the Antlia cluster confirmed through GEMINI-GMOS spectroscopy.

SMITH CASTELLI, A. V.; FAIFER, F. R.; BASSINO, LILIA P.; RICHTLER, T.; CELLONE, S. A.

Bonn

Workshop; Tidal Dwarf Galaxies: Ghosts from structure formation; 2009

Argenlander Institut fur Astronomie

Compact elliptical (cE) galaxies are low luminosity systems that display notorious high surface brightness in comparison with ellipticals of the same luminosity and correspondingly small sizes. They constitute a very rare group, as only five objects have been confirmed as such, in addition to the prototype M32. <!-- @page { margin: 0.79in } P { margin-bottom: 0.08in } --> We present here low resolution spectroscopy and confirm a new cE bellowing to the Antlia Cluster. At the present, it is the only cE showing clear evidence of interaction with its bright companion. The spectrum of this galaxy displays very similar features to that of the halo of NGC 3258. This similarity reinforces the classification of FS90 110 as a cE galaxy.