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Confirmation of the star J004229.87+410551.8 in M31 as B[e]-supergiantстатья
- Авторы: Sarkisyan Arkadiy Norayrovich, Vinokurov Alexander, Solovyeva Yulia, Atapin Kirill, Sholukhova Olga, Fabrika Sergey, Bizyaev Dmitry
- Сборник: Proceedings of The Multifaceted Universe: Theory and Observations - 2022
- Том: 425
- Год издания: 2022
- Издательство: Sissa Medialab
- Местоположение издательства: Italy
- Номер статьи: 047
- DOI: 10.22323/1.425.0047
- Аннотация: We study the luminous blue variable candidate J004229.87+410551.8 in the Andromeda Galaxy. Earlier, the star displayed a spectral anomaly: although a hot emission spectrum had been detected, it had strong CaII H and K absorption lines. Subsequently the star was assumed to be a hot hypergiant or a B[e] supergiant. For the purpose of clear star classification, we conducted spectroscopic and photometric analysis of the object and its surroundings with the 6-m telescope of SAO RAS, the 3.5-m ARC telescope of the Apache Point Observatory and the 2.5-m telescope of the Caucasus Mountain Observatory of the Sternberg Astronomical Institute. The spectrum of the star has the FeII, [FeII], [OI], and Balmer emission lines. Its spectral energy distribution shows an excess in the near-infrared range due to hot circumstellar dust. The indicated features and a high estimated value of star's luminosity (log(L/L⊙)=4.6±0.2) allow us to finally classify the object as a B[e] supergiant.
- Добавил в систему: Атапин Кирилл Евгеньевич