The low-luminosity galaxy population in the NGC 5044 Group (Conference proceeding)
arXiv:astro-ph/0603697 · doi:10.1007/978-3-540-71173-5_14
Abstract
Detailed surface photometry for 79 (mostly dwarf) galaxies in the NGC 5044 Group area is analysed, revealing the existence of different morphologies among objects originally classified as early-type dwarfs. Particularly, a significant fraction of bright dwarf "ellipticals" show a distinct bulge+disc structure; we thus re-classify these objects as dwarf lenticulars (dS0). Our finding points at a possible scenario where these systems are the remnants of "harassed" disc galaxies. This is emphasized by the discovery of a few objects with hints for very low-surface brightness spiral-like structure. The colours, structure, and spatial distribution of the different galaxy types suggest that our classification may indeed be separating objects with different origins and/or evolutionary paths.
5 pages. To appear in ESO Astrophysics Symposia: "Groups of Galaxies in the Nearby Universe"
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