Photometric variability of the novalike object V380 Oph in 1976 - 2016

Авторы: Shugarov S., Golysheva P., Sokolovsky K., Chochol D.
Сборник: Astroplate Proceedings
Год издания: 2016
Место издания: Czech Technical University in Prague Prague
Первая страница: 59
Последняя страница: 62
Аннотация: We combined photographic, photoelectric and CCD observations of the nova-like variable V380 Oph to get a light curve spanning the time range of 40 years. While the typical high-state brightness of V380 Oph was R ~ 14.5, two low-brightness episodes identified in 1979 Bpg ~ 17.5 and 2015 R ~ 19. confirm its classification as a VY Scl - type "anti-dwarf nova". The Fourier period analysis of photoelectric and CCD V and B observations obtained in 2002 - 16 revealed the presence of two periods 0.148167 day and 4.287 day,that may be associated with negative superhumps and disc precession. We also compared measurements obtained with the iris micro-photometer and flatbed scanner at the same plates and found an agreement within the expected accuracy of photographic photometry.
Добавил в систему: Шугаров Сергей Юрьевич

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