Gas in Galaxies
Astrophysics of Galaxies
2025-04-14 v1
Abstract
In this chapter, we give an overview of the major components of the interstellar medium (ISM) in galaxies at a level appropriate for upper level undergraduates or beginning graduate students. We discuss the major constituents of the the ISM in present-day star forming galaxies and summarize common methods to observe these components. We also review basic aspects of ISM structure accessible to extragalactic observations. Finally, we describe variations in ISM content and star-formation activity among local universe galaxies.
Keywords
Cite
@article{arxiv.2504.08103,
title = {Gas in Galaxies},
author = {Adam K. Leroy and Alberto D. Bolatto},
journal= {arXiv preprint arXiv:2504.08103},
year = {2025}
}
Comments
18 pages, 6 figures. This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S. McGee) to be published by Elsevier as a Reference Module