Physical and Wind Properties of OB-Stars

Details Physical and Wind Properties of OB-Stars Physical and Wind Properties of OB-Stars

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..250...25p&link_type=abstract

Massive Stars as Cosmic Engines, Proceedings of the International Astronomical Union, IAU Symposium, Volume 250, p. 25-38

Astronomy and Astrophysics

Astronomy

8

Stars: Early-Type, Stars: Atmospheres, Stars: Fundamental Parameters, Stars: Winds, Outflows, Stars: Mass Loss, Stars: Rotation, Techniques: Spectroscopic, Surveys, Magnetic Fields

Scientific paper

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.

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