The masses of late-type WN stars

Details The masses of late-type WN stars The masses of late-type WN stars

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hia....14..199g&link_type=abstract

Highlights of Astronomy, Volume 14, p. 199-199

Astronomy and Astrophysics

Astronomy

Stars: Mass Loss, Stars: Winds, Outflows, Stars: Wolf-Rayet

Scientific paper

We present recent results for galactic WNL stars, obtained with the new Potsdam Wolf-Rayet (PoWR) hydrodynamic model atmospheres. Based on a combination of stellar wind modeling and spectral analysis we identify the galactic WNL subtypes as a group of extremely luminous stars close to the Eddington limit. Their luminosities imply progenitor masses around 120 M or even above, making them the direct descendants of the most massive stars in the galaxy. Because of the proximity to the Eddington limit our models are very sensitive to the L/M ratio, thus allowing for a direct estimate of the present masses of these objects.

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