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Nova Monocerotis 2002 (V838 Mon) at Early Outburst Stagesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Goranskii V.P., Kusakin A.V., Metlova N.V., Shugarov S.Yu, Barsukova E.A., Borisov N.V.
- Журнал: SOVIET ASTRONOMY LETTERS
- Том: 28
- Номер: 10
- Год издания: 2002
- Первая страница: 691
- Последняя страница: 700
- DOI: 10.1134/1.1512226
- Аннотация: We obtained U BV R photometric and spectroscopic observations during the outburst of V838 Mon. Before its outburst, the B brightness of the star had been stable ( 1˜5.m85 ) for 45 years. This was a blue star with the color index (B−V)_0 = −0.m03±0.m1 and may have been a cataclysmic variable. In the middle of March 2002, the outburst amplitude reached 8.m1 in B. The star has the counterpart V 1006/7 in M 31 in luminosity at maximum and in spectrum. The unusual spectrum at the premaximum stage originated in the expanding photosphere of a cool K-type giant. The expansion velocity of the photosphere was 150 km s−1; the maximum velocity in the expanding stellar envelope reached 500 km s−1. The absorption components of neutral metal lines were enhanced by a factor of 3 or 4 compared to a normal K-type star. No overabundance of s-process elements was found. One day before the brightness peak, an intense Hα emission line with broad wings, FWZI=3100 km s−1, and numerous lines of ionized metals appeared in V838 Mon, which is characteristic of normal classical novae. We show light, color, and spectral variations of the object.
- Добавил в систему: Шугаров Сергей Юрьевич