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Cyg X-1=V1357 Cyg: long-term variability continuesстатья
- Авторы: Karitskaya E.A., Bochkarev N.G., Goranskij V.P., Metlova N.V., Klochkova V.G., Yushkin M.V.
- Сборник: ASP Conference Series
- Том: 510
- Год издания: 2017
- Место издания: Astronomical Society of the Pacific Can Francisco, California, USA
- Первая страница: 408
- Последняя страница: 412
- Аннотация: As a result of our multi-year study of the photometric and spectral variability of Cyg X-1, we have established that the mean level of star brightness continues to decrease since 1999 with the variations on smaller time scales superimposed. Our spectral observations with the 6 meter and 1 meter telescope of the SAO RAS show variations of absorption line depths. There is a connection between X-ray and optical changes, which suggests that the fundamental parameters of the supergiant in the system of Cyg X-1 are varying. There are evidences of a possible presence of a variable optically thin gas in the system.
- Добавил в систему: Горанский Виталий Петрович