Superoutburst of a New Sub-Period-Minimum Dwarf Nova CSS130418 in Hercules

Авторы: Chochol D., Shugarov S., Katysheva N., Volkov I., Zharova A., Pavlenko E., Pit N., Zvagelsky R., Antoniuk O., Baklanov A., Borisov N., Gabdeev M.
Сборник: Acta Polytechnica
Серия: CTU Proceedings
Том: 2
Год издания: 2015
Первая страница: 165
Последняя страница: 169
DOI: 10.14311/APP.2015.02.0165
Аннотация: Multicolour photometry of a new dwarf nova CSS130418 in Hercules, which underwent superoutburst on April 18, 2013, allow to classified it as a WZ Sge-type dwarf nova. The phase light curves for different stages of superoutburst are presented. The early superhumps were used to determine the orbital period Porb = 64.84(1) minutes, which is shorter than the period minimum ~78 minutes for normal hydrogen-rich cataclysmic variables. We found the mean period of ordinary superhumps Psh = 65.559(1) minutes. The quiescent spectrum is rich in helium, showing double peaked emission lines of H I and He I from accretion disk, so the dwarf nova is in a late stage of stellar evolution.
Добавил в систему: Катышева Наталья Андреевна

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