O-Star Wind Diagnostics Based On Chandra HETG Grating Observations

Details O-Star Wind Diagnostics Based On Chandra HETG Grating Observations O-Star Wind Diagnostics Based On Chandra HETG Grating Observations

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21340804n&link_type=abstract

American Astronomical Society, AAS Meeting #213, #408.04; Bulletin of the American Astronomical Society, Vol. 41, p.205

Astronomy and Astrophysics

Astronomy

Scientific paper

The Chandra HETG spectra of O stars reveal quantitative information concerning the origin, location, and temperature structure of the stellar wind distributed X-ray sources. As part of a Large Program with the Chandra X-ray Observatory, we have analyzed the` grating spectra of both early and late O stars to study the mapping between the X-ray line emission characteristics and the evolution of these stellar winds. In this study, the resulting X-ray and wind parameters for an O2 star are compared for consistency with those of later O stars. We also describe the complex data analysis techniques required to extract HETG spectra in crowded fields.

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