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Chandra observations of the dwarf starburst and Wolf-Rayet galaxies NGC 4449 and NGC 5253

Published online by Cambridge University Press:  26 May 2016

Lesley K. Summers ,
Ian R. Stevens ,
David K. Strickland  and
Timothy M. Heckman
Lesley K. Summers
Affiliation:
School of Physics and Astronomy, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Ian R. Stevens
Affiliation:
School of Physics and Astronomy, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
David K. Strickland
Affiliation:
Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Carolina Street, Baltimore, MD 21218, USA
Timothy M. Heckman
Affiliation:
Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Carolina Street, Baltimore, MD 21218, USA

Abstract

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We present an analysis of the Chandra observations of two dwarf starburst, Wolf-Rayet galaxies (NGC 4449 and NGC 5253). We have identified at least three different classes of objects within the X-ray point source populations, and we have found the diffuse emission, resulting from the stellar winds and supernova explosions of massive stars, to have a complex morphology and to consist of several components. Comparison with the Hα emission suggests the presence of ~ kpc-scale wind-blown bubbles and ruptured superbubbles.

Type
Part 4. Feedback from Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 751 - 752
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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