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Physical and Wind Properties of OB-Stars

Published online by Cambridge University Press:  01 December 2007

Joachim Puls
Joachim Puls*
Affiliation:
Universitätssternwarte München, Scheinerstr. 1, D-81679 München, Germany email: uh101aw@usm.uni-muenchen.de
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Abstract

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In this review, the physical and wind properties of OB-stars are discussed, with particular emphasis on metallicity dependence and recent results from the flames survey of massive stars. We summarize the relation between spectral type and Teff, discuss the status quo of the “mass-discrepancy”, refer to the problem of “macro-turbulence” and comment on the distribution of rotational velocities. Observational constraints on the efficiency of rotational mixing are presented, and magnetic field measurements summarized. Wind properties are reviewed, and problems related to weak winds and wind-clumping highlighted.

Keywords

stars: early-type – stars: atmospheres – stars: fundamental parameters – stars: windsoutflows – stars: mass loss – stars: rotation – techniques: spectroscopic – surveys – magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S250: Massive Stars as Cosmic Engines , December 2007 , pp. 25 - 38
Copyright
Copyright © International Astronomical Union 2008

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