The results of our analysis of the optical spectra of the $\gamma\,$Cas type stars under the large observation program {\it Line Profile Variability in the Spectra of OBA Stars and the Nature of their X-Ray emission} and the results of a study of the archival X-ray spectra of these stars based on observations on the XMM-Newton satellite are presennted. A fast variability of the line profiles in the optical spectra of $\gamma\,$Cas type stars on scales from several minutes to hours, as well as the similar fast variability of their X-ray light curves are detected.
Volume 425 -
The Multifaceted Universe: Theory and Observations - 2022 (MUTO2022) -
Stars and interstellar medium
Stars like gamma Cassiopeia: close to us and enigmatic
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Pre-published on:
September 16, 2022
Published on:
December 14, 2022
Abstract
DOI: https://doi.org/10.22323/1.425.0044
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.