HI gas disks in elliptical galaxies
Astrophysics
2007-05-23 v1
Abstract
We discuss a class of low-luminosity E/S0 galaxies which have both HI disks and (in contrast to more luminous E/S0s with HI) ongoing star formation. We suggest that such objects are common, but that only a few are known at present because optical magnitude-limited galaxy catalogues are biased against them. The HI Parkes All-Sky Survey (HIPASS) should eventually detect many more. We suggest that `boxy' and `disky' ellipticals are distinct not only in their structure and kinematics, but in their star-formation history.
Cite
@article{arxiv.astro-ph/0011399,
title = {HI gas disks in elliptical galaxies},
author = {E. M. Sadler and T. Oosterloo and R. Morganti},
journal= {arXiv preprint arXiv:astro-ph/0011399},
year = {2007}
}
Comments
to appear in "Galaxy disks & disk galaxies", ASP Conference Series, J.G. Funes & E.M. Corsini (eds.)