Two confirmed compact elliptical galaxies in the Antlia cluster

Two confirmed compact elliptical galaxies in the Antlia cluster

We confirm the existence of two compact elliptical (cE) galaxies in the central region of the Antlia cluster through MAGELLAN-MIKE and GEMINI-GMOS spectra. Only about a dozen galaxies of this rare type are known today up to a distance of 100 Mpc. With this finding, Antlia becomes the nearest galaxy...

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Veröffentlicht in:arXiv.org 2010-02
Hauptverfasser: Smith Castelli, Analia V, Faifer, Favio R, Bassino, Lilia P, Romero, Gisela A, Cellone, Sergio A, Richtler, Tom
Format: Artikel
Sprache:eng
Schlagworte:
Compact galaxies
Elliptical galaxies
Galactic clusters
Star & galaxy formation
Stars & galaxies
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Zusammenfassung:We confirm the existence of two compact elliptical (cE) galaxies in the central region of the Antlia cluster through MAGELLAN-MIKE and GEMINI-GMOS spectra. Only about a dozen galaxies of this rare type are known today up to a distance of 100 Mpc. With this finding, Antlia becomes the nearest galaxy cluster harbouring more than one cE galaxy among its galaxy population. One of these galaxies shows evidence of interaction with one of the giant ellipticals that dominate the central region of the cluster.
ISSN:2331-8422