<< back
Atmospheric Parameters and Chemical Abundances of Pulsating β Cephei Stars in Open Clusters

E. Niemczura, T. Różański, M. Rainer, J. F. Gameiro, F. Rodler

β Cephei stars are massive, non-supergiant, intrinsic variables. Theoretical investigations indicate that their pulsation mechanism strongly depends on the abundance of heavy elements. Until now, hundreds of these B-type variables were discovered photometrically, but only for a small sample spectroscopic data are available. We present the results of the investigation of high-resolution and high signal-to-noise spectra of β Cephei stars in the young open clusters. We use TLUSTY and SYNTHE codes to calculate models of the atmospheres and synthetic spectra, and spectrum synthesis method to analyse the data. For all stars, we determine effective temperatures, surface gravities, projected rotational velocities, micro- and macroturbulences, and metallicities.

ISBN: 978-1-58381-925-8

Radiative Signatures from the Cosmos
Stehle Werner

Astronomical Society of the Pacific
Volume 519, Page 205
2019 July

>> ADS

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia