Ion fractions and the weak wind problem

Details Ion fractions and the weak wind problem Ion fractions and the weak wind problem

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..272..600a&link_type=abstract

Active OB stars: structure, evolution, mass loss, and critical limits, Proceedings of the International Astronomical Union, IAU

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Stars: Mass Loss, Ultraviolet: Stars

Scientific paper

Some late-type O stars display anomalously weak winds, possibly due to decoupling of the main driving ions from the bulk plasma. This issue and the uncertainty about the nature of wind clumping are a challenge to line-driven wind theory and need resolving in order to fully understand hot stars. We describe the results from the computation of ion fractions for the various elements in O star winds using non-LTE code CMFGEN, including parameterisation of microclumping and X-rays.

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