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A Dirty WindowA Quick Look at the Diffuse Interstellar Medium

A Dirty Window: A Quick Look at the Diffuse Interstellar Medium [To introduce our subject, we provide an overview of the interstellar medium (ISM) in our Galaxy and its relation to the stellar component. We then discuss the phase structure of the ISM, with a special emphasis on why the hydrogen takes the different forms it does. We then outline the observational signatures of the Hot Ionized, Warm Ionized, Warm Neutral, and Cold Neutral media, followed by a brief introduction to the molecular component of the Galaxy. A description of Photo-Dissociation Regions is presented with emphasis on the transition region from atomic to diffuse molecular gas. The role of dust and cosmic rays is also briefly described. Finally, we discuss the concept of a molecular cloud, a central theme of this book.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

A Dirty WindowA Quick Look at the Diffuse Interstellar Medium

Part of the Astrophysics and Space Science Library Book Series (volume 442)
A Dirty Window — Apr 9, 2017

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References (77)

Publisher
Springer Berlin Heidelberg
Copyright
© Springer-Verlag GmbH Germany 2017
ISBN
978-3-662-54348-1
Pages
1 –27
DOI
10.1007/978-3-662-54350-4_1
Publisher site
See Chapter on Publisher Site

Abstract

[To introduce our subject, we provide an overview of the interstellar medium (ISM) in our Galaxy and its relation to the stellar component. We then discuss the phase structure of the ISM, with a special emphasis on why the hydrogen takes the different forms it does. We then outline the observational signatures of the Hot Ionized, Warm Ionized, Warm Neutral, and Cold Neutral media, followed by a brief introduction to the molecular component of the Galaxy. A description of Photo-Dissociation Regions is presented with emphasis on the transition region from atomic to diffuse molecular gas. The role of dust and cosmic rays is also briefly described. Finally, we discuss the concept of a molecular cloud, a central theme of this book.]

Published: Apr 9, 2017

Keywords: Molecular Cloud; Dark Cloud; Mass Surface Density; Diffuse Cloud; Hydrogen Column Density

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