Ultraviolet variability of B, Be, and B[e] stars

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Authors

KRTIČKOVÁ Iva KRTIČKA Jiří

Year of publication 2020
Type Article in Proceedings
Conference Stars and their variability observed from space
MU Faculty or unit

Faculty of Science

Citation
Web https://starsandspace.univie.ac.at/fileadmin/user_upload/p_stars/Proceedings/2020starsconf..0435K.pdf
Keywords stars: early-type; stars: emission-line; Be; stars: variables: general; stars: oscillations
Description We study the ultraviolet variability of evolved B[e], Be, and B stars from our Galaxy and from the Magellanic Clouds. We use IUE observations to derive fluxes of individual stars in the selected bands in the near-UV and far-UV regions. We diagnose the variability in the lines and the total flux variability. We discuss the origin of the UV light variability of studied stars. We detected pulsations in B[e] star HD 50138, LBV-type variations in HD 34664, and constant luminosity for a group of B[e] supergiants.
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