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X-ray hardness ratios for stars of different spectral types

Published online by Cambridge University Press:  12 May 2006

E. J. A. Meurs ,
P. Casey  and
L. Norci
E. J. A. Meurs
Affiliation:
Dunsink Observatory, Dublin Institute for Advanced Studies, Castleknock, Dublin 15, Ireland
P. Casey
Affiliation:
Dunsink Observatory, Dublin Institute for Advanced Studies, Castleknock, Dublin 15, Ireland
L. Norci
Affiliation:
School of Physics, Dublin City University, Dublin, Ireland
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Abstract

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A substantial number of stars was detected in the ROSAT All Sky Survey. Analysis of these data indicates a systematic shift in the distribution of their X-ray hardness ratios, from late type dwarfs to late type giants to early type stars, that can be attributed to systematic differences in line-of-sight absorption.

Keywords

Stars: X-rays
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 45 - 46
Copyright
2006 International Astronomical Union