HI in Early-Type Galaxies

2000/09/07 by T. Oosterloo, R. Morganti, Oosterloo, T. +3
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0009112

To appear in the proceedings of the conference "Gas and Galaxy Evolution" (ASP Conference Series), eds. J. Hibbard, M. Rupen, and J. van Gorkom

arxiv created 2000/09/07 · arxiv updated 2009/12/01

Abstract

We briefly discuss the main differences between the HI properties of luminous and low-luminosity early-type galaxies. In luminous early-type galaxies the HI is often irregularly distributed, but in a few cases regular HI disks, of low surface density, are seen. In low-luminosity galaxies, the HI is more often in a disk with high central surface densities. This suggests a different evolution of the gas in these two groups of galaxies.

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