Constraints on parameters of B-type pulsators from combined multicolour photometry and radial velocity data I.β Cephei stars
- Author(s)
- J Daszynska-Daszkiewicz, Wojciech A. Dziembowski, Aleksiej Pamiatnych
- Abstract
We analyze data on pulsation amplitudes and phases for two β Cephei stars, δ Cet and ν Eri. Strömgren photometry and radial velocity measurements are used simultaneously to obtain constraints on mean parameters of the stars and identification of the excited modes. The inference about the radial mode order and mean star parameters is based on comparison of certain complex parameter, f, determined from data, with its counterpart derived from linear nonadiabatic modelling of stellar oscillations. The theoretical f values are very sensitive to the adopted opacity data. In our modelling we rely on the data from OPAL and OP projects. Significant differences were found. New seismic models of ν Eri were constructed with both the OPAL and OP opacities. © ESO 2005.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- University of Wrocław, Nicolaus Copernicus University
- Journal
- Astronomy & Astrophysics
- Volume
- 441
- Pages
- 641-651
- No. of pages
- 11
- ISSN
- 0004-6361
- DOI
- https://doi.org/10.1051/0004-6361:20052690
- Publication date
- 2005
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/a431862a-7f7e-4040-975f-019df70c99fc