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SDSS J080434.20+510349.2: cataclysmic variable witnessing the instability stripстатья
- Авторы: Pavlenko E., Malanushenko V., Tovmassian G., Zharikov S., Kato T., Katysheva N., Andreev M., Baklanov A., Antonyuk K., Pit N., Sosnovskij A., Shugarov S.
- Сборник: Memorie della Societa Astronomica Italiana
- Том: 83
- Год издания: 2012
- Первая страница: 520
- Последняя страница: 524
- Аннотация: Among the accreting pulsators that have experienced a dwarf novae outburst, SDSS J080434.20+510349.2 has the most dramatic history of events within a short time scale: the 2006 outburst with 11 rebrightenings, series of December 2006 – January 2007 mini-outbursts, the 2010 outburst with 6 rebrightenings. Over 2006–2011, in addition to positive 0.060-d superhumps during the superoutburst and 1-month post-outburst stage, 0.059005-d orbital humps in quiescence, it displayed the periods of P1 = 12:6 min, P2 = 21:7min, P3 = 14:1 min and P4 = 4:28 min. The 12.6-min non-radial pulsations of the WD first appeared 7 months after the 2006 outburst and was the most prominent one during the following 900 days. They varied within a range of 36 s, and amplitude changed from 0:013m to 0:03m. Simultaneously there were the less significant 21.7-min and 14.3-min periodicities. During the minioutbursts the 21.7-min periodicity became the most powerful while the 12.6-min one was less powerful. After the 2011 outburst the most prominent shortterm periodicity appeared 7 months after the outburst, but at 4.28 min. We identified that variability with periods P2, P3 and P4 could be additional pulsation modes.
- Добавил в систему: Катышева Наталья Андреевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 520.pdf | 1,4 МБ | 23 марта 2015 [s_shugarov] |