Letter to the Editor
A MOST probable explanation of the pulsation of WR 123
Institut für Astronomie der Universität Wien, Türkenschanzstr. 17, 1180 Wien, Austria e-mail: firstname.lastname@example.org
2 Wetterchrüzstr. 8c, 4410 Liestal, Switzerland
3 Astronomical Institute, Tohoku University, Sendai, Japan
Accepted: 18 May 2006
Aims.Resorting to the observed period of the cyclic part of WR 123's photometric variability we constrain its stellar parameters.
Methods.Radiation hydrodynamic simulations were performed on selected stellar envelope models for which also linear stability analyses were computed.
Results.Pulsations of massive hydrogen-rich stellar envelopes subject to sufficiently high luminosity-to-mass ratios are excited with periods that conform with the observed one by MOST in WR123.
Key words: stars: massive / stars: pulsations / stars: individual: WR123
© ESO, 2006