MV Lyr: Transition from Low to High Brightness State

Авторы: Pavlenko Elena, Antoniuk Kirill, Shugarov Sergei Yu, Katysheva Nataly A., Muzhdabaeva Lenie, Mikhajlov Vyacheslav
Сборник: Zdeněk Kopal's Binary Star Legacy
Год издания: 2005
Место издания: Springer
Первая страница: 461
Последняя страница: 464
DOI: 10.1007/1-4020-3875-5_68
Аннотация: We present results of multicolour photometry of the nova-like binary MV Lyr in the years 2002-2003, corresponding to the transition of the star from its low (V = 17.8) to high (V = 12.3) brightness state. The transition lasted at most 200 days. During the first ˜50 days MV Lyr brightened at the rate 0.06 mag/day, and during the next ˜150 days at the rate 0.01 mag/day. The brightening was accompanied by a blue shift from 0.45 to 0.05 in V — R, interpreted as an increase of the accretion disk contribution to the total light. During the transition MV Lyr displayed well-known `quasi-orbital' light variations and fast quasi-periodic oscillations with a typical time scale of tens of minutes.
Добавил в систему: Катышева Наталья Андреевна

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