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Spectroscopic and photometric variability of HD 51585 as a manifestation of stellar windстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Arkhipova V.P., Ikonnikova N.P., Komissarova G.V., Esipov V.F.
- Журнал: Astronomy Letters
- Том: 32
- Номер: 9
- Год издания: 2006
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 594
- Последняя страница: 603
- DOI: 10.1134/S1063773706090040
- Аннотация: We present the results of our photoelectric observations of HD 51585 ( OY Gem), a B[ e] star with an infrared excess and a candidate for protoplanetary nebulae, obtained with a 60-cm telescope at the Crimean Station of the Sternberg Astronomical Institute in 1992 - 2005. The star exhibited rapid irregular brightness variations with amplitudes from 0(.)(m)1 in the V band to 0(.)(m)2 in the U band within the observing season as well as slow systematic variations with amplitudes from 0(.)(m)3 in the V band to 0(.)(m)65 in the U band and with a quasi-period of similar to 2800 days. The B - V color index varied within 0(.)(m)1 and did not follow the slow systematic brightness variations, while U-B correlated with the U brightness and varied between -0(.)(m)7 at minimum light. Our low-resolution spectroscopy performed in 1994-2005 has revealed significant variability of the Balmer and Paschen hydrogen emission lines as well as the He I and O I lines. Equivalent widths are given for the H I, He I, O I, and Fe II lines; a correlation has been found between the star's photometric variability and the hydrogen line intensities. Our joint analysis of the photometric and spectroscopic data suggests that variations in a strong stellar wind are responsible for the variability of the star.
- Добавил в систему: Есипов Валентин Федорович