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Chandra X-ray Observations of Dwarf Starburst Galaxies

Published online by Cambridge University Press:  26 May 2016

Jürgen Ott ,
Fabian Walter ,
Elias Brinks  and
Ulrich Klein
Jürgen Ott
Affiliation:
CSIRO Australia Telescope National Facility, Cnr Vimiera & Pembroke Rds, Marsfield NSW 2122, Australia
Fabian Walter
Affiliation:
National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA
Elias Brinks
Affiliation:
Instituto Nacional de Astrofísica, Optica y Electrónica (INAOE), Puebla, Mexico
Ulrich Klein
Affiliation:
Radioastronomisches Institut, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany

Abstract

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We obtained X-ray observations for a sample of eight nearby dwarf starburst galaxies from the Chandra X-ray Observatory. Five galaxies of our sample show extended (size: 1-10 kpc), diffuse X-ray emission which can be attributed to a hot thermal plasma. This phase of the interstellar medium purportedly drives the expansion of supergiant shells. A comparison of the derived gas parameters with theoretical models reveals that the hot gas in principle is capable to escape from the gravitational potential of the host galaxy. However, the outflows appear to be contained in those cases where an extended envelope or massive tidal features of neutral gas exist.

Type
Part 3. Ejection and Outflow
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 304 - 309
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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