Massive stars shaping the ISM:Hi holes and shells in nearby galaxies

E. Brinks, F. Walter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Neutral hydrogen (H I) is a magnificent tool when studying the structure of the interstellar medium (ISM) as it is relatively easily observable and can be mapped at good spatial and velocity resolution with modern instruments. Moreover, it traces the cool (~ 100 K) and warm (~ 5000 K) neutral gas which together make up about 60%, or the bulk, of the ISM. The currently accepted picture is that stellar winds and subsequent supernovae are the origin for the clearly defined holes or bubbles within the more or less smooth neutral medium. The H I can therefore serve indirectly as a tracer of the hot interstellar medium (HIM)left behind after the most massive stars within an OB association have gone off as supernovae. A splendid example is the dwarf galaxy IC 2574 for which we discuss H I, optical and X-ray observations.
Original languageEnglish
Title of host publicationWolf-Rayet Phenomena in Massive Stars and Starburst Galaxies
EditorsK A van der Hucht, G Koenigsberger, P R J Eenens
PublisherThe International Astronomical Union
Pages636-644
Publication statusPublished - 1999

Publication series

NameProcs IAU Symposium
PublisherIAU
Volume193

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