The Effects of Clumping on UV Wind Line Diagnostics

Details The Effects of Clumping on UV Wind Line Diagnostics The Effects of Clumping on UV Wind Line Diagnostics

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1135..158m&link_type=abstract

FUTURE DIRECTIONS IN ULTRAVIOLET SPECTROSCOPY: A Conference Inspired by the Accomplishments of the Far Ultraviolet Spectroscopic

Computer Science

Mass Loss And Stellar Winds, Cosmology, Binary And Multiple Stars

Scientific paper

By comparing mass loss rates determined from radio, Hα, and UV resonance lines, it is now reasonably certain that clumping in OB star winds affects empirical determinations of their mass loss rates. We examine three UV wind line diagnostics that are sensitive to clumping and, ultimately, may help constrain its nature. They are: 1) Doublet ratios of resonance lines. 2) Ratio of the resonance and radiatively excited state lines. 3) Narrow absorption components near the terminal velocity in stars with weak winds.

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