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

Abstract
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.

Notes
ISBN: 978-1-58381-925-8

Radiative Signatures from the Cosmos
Stehle Werner

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

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