Hot Gas in the Local Group and Low-Redshift Intergalactic Medium

Details Hot Gas in the Local Group and Low-Redshift Intergalactic Medium Hot Gas in the Local Group and Low-Redshift Intergalactic Medium

2003-11-04

arxiv.org/abs/astro-ph/0311089v1

Astronomy and Astrophysics

Astrophysics

14 pages, includes 5 figures and cupconf.cls style file. To be published in the proceedings of the 2003 STScI May Symposium "T

Scientific paper

There is increasing observational evidence that hot, highly ionized interstellar and intergalactic gas plays a significant role in the evolution of galaxies in the local universe. The primary spectral diagnostics of the warm-hot interstellar/intergalactic medium are ultraviolet and X-ray absorption lines of O VI and O VII. In this paper, I summarize some of the recent highlights of spectroscopic studies of hot gas in the Local Group and low-redshift universe. These highlights include investigations of the baryonic content of low-z O VI absorbers,evidence for a hot Galactic corona or Local Group medium, and the discovery of a highly ionized high velocity cloud system around the Milky Way.

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