• DOI:10.1086/507409
• Corpus ID: 119095436

MOST Detects g- and p-Modes in the B Supergiant HD 163899 (B2 Ib/II)

@article{Saio2006MOSTDG,
  title={MOST Detects g- and p-Modes in the B Supergiant HD 163899 (B2 Ib/II)},
  author={Hideyuki Saio and Rainer Kuschnig and A. Gautschy and Chris Cameron and Gordon Arthur Hunter Walker and Jaymie Matthews and David B. Guenther and Anthony F. J. Moffat and Slavek M. Rucinski and Dimitar D. Sasselov and Werner W. Weiss},
  journal={The Astrophysical Journal},
  year={2006},
  volume={650},
  pages={1111-1118}
}

• H. Saio, R. Kuschnig, +8 authors W. Weiss
• Published 29 June 2006
• Physics
• The Astrophysical Journal

The Microvariability and Oscillations of Stars (MOST) satellite observed the B supergiant HD 163899 (B2 Ib/II) for 37 days as a guide star and detected 48 frequencies P2.8 cycles day � 1 with amplitudes of a few millimagnitudes (mmag) and less. The frequency range embraces g- and p-mode pulsations. It was generally thought that no g-modes are excited in less luminous B supergiants because strong radiative damping is expected in the core. Our theoretical models, however, show that such g-modes are excited in massive postYmain-sequence stars, in accordance with these