• DOI:10.1553/cia151s48
• Corpus ID: 16623201

Revised instability domains of SPB and β Cephei stars

@article{Miglio2007RevisedID,
  title={Revised instability domains of SPB and $\beta$ Cephei stars},
  author={Andrea Miglio and Josefina Montalb{\'a}n and M. Li{\`e}ge and Observatoire de Paris and Lesia},
  journal={Communications in Asteroseismology},
  year={2007},
  volume={151},
  pages={48-56}
}

• A. Miglio, J. Montalbán, +2 authors Lesia
• Published 25 June 2007
• Physics
• Communications in Asteroseismology

The excitation of pulsation modes in β Cephei and Slowly Pulsating B stars is known to be very sensitive to opacity changes in the stellar interior where T ∼ 2 × 10 5 K. In this region differences in opacity up to ∼ 50% can be induced by the choice between OPAL and OP opacity tables, and between two different metal mixtures (Grevesse & Noels 1993 and Asplund et al. 2005). We have extended the non-adiabatic computations presented in Miglio et al. (2007) towards models of higher mass and pulsation modes of degree � =3 , and we present here the instability domains in the HR- and log P -log Teff diagrams resulting from different choices of opacity tables, and for three different metallicities.