Measuring the Rotation Rates of Wolf-Rayet Stars From Large-Scale Wind Variability

Details Measuring the Rotation Rates of Wolf-Rayet Stars From Large-Scale Wind Variability Measuring the Rotation Rates of Wolf-Rayet Stars From Large-Scale Wind Variability

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..33...32c&link_type=abstract

Massive Stars: Fundamental Parameters and Circumstellar Interactions (Eds. P. Benaglia, G. L. Bosch, & C. E. Cappa) Revista Mexi

Astronomy and Astrophysics

Astronomy

Stars: Rotation, Stars: Winds, Outflows, Stars: Wolf-Rayet

Scientific paper

The rotational velocity of Wolf-Rayet (WR) stars cannot be measured directly from ``classical'' photospheric absorption lines. However, it can be infered from periodic large-scale wind variability. After identifying a list of WR stars presenting large-scale spectral variability, we have monitored 3 of them intensively. The period of these stars, along with the already published periods of WR6 and WR134, lead to a rotational velocity for WR stars in the range of 10-60 km s^{-1}.

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