Measurements and Analysis of Helium-Like Triplet Ratios in the X-Ray Spectra of O-Type Stars
Description:
We discuss new methods of measuring and interpreting the forbidden-to-intercombination line ratios of helium-like triplets in the X-ray spectra of O-type stars, including accounting for the spatial distribution of the X-ray emitting plasma and using the detailed photospheric UV spectrum. Measurements are made for four O stars using archival Chandra HETGS data. We assume an X-ray emitting plasma spatially distributed in the wind above some minimum radius R{sub 0}. We find minimum radii of format…
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Date:
June 19, 2006
Creator:
Leutenegger, Maurice A.; Paerels, Frits B. S.; Kahn, Steven M. & Cohen, David H.
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