Multicolor studies of the old novae behavior

Авторы: Pavlenko E.P., Shugarov S.Yu, Goranskij V.P., Primak N.V.
Сборник: CLASSICAL NOVA EXPLOSIONS: International Conference on Classical Nova Explosions
Серия: AIP Conference Proceedings
Том: 637
Год издания: 2002
Издательство: AIP Publishing
Местоположение издательства: United States
Первая страница: 519
Последняя страница: 526
DOI: 10.1063/1.1518255
Аннотация: We present a result of our multicolor investigation of the old non-magnetic novae Q Cyg (Nova Cyg 1876), DI Lac (Nova Lac 1910), V446 Her (Nova Her 1960) in 1991 - 2001 and magnetic nova V1500 Cyg (Nova Cyg 1975) in 2000 - 2001. The non-magnetic novae display the outburst-like brightening in a wide region of amplitudes (0m.5 - 2m.5) and cycle duration (~ 23-d - ~ 65-d). Similarly to the dwarf novae outbursts, they show a loops on the color - magnitude diagram. A shape of the loop (its width and slope) is different for different novae. In some cases the behavior of oubursts is in agreement with the model of tidal instability of accretion disk. Magnetic nova V1500 Cyg displays a strong brightening every 8.5-d, probably caused by a periodical enhancement of accretion stream and/or accretion ring surrounding the magnetic dwarf in asynchronous binary.
Добавил в систему: Шугаров Сергей Юрьевич

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