Variability of the H2O maser associated with the Mira variable RS Virginis

Lekht, E.E.; Mendoza-Torres, J.E.; Rudnitskij, G.M.; Tolmachev, A.M.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

Авторы: Lekht E.E., Mendoza-Torres J.E., Rudnitskij G.M., Tolmachev A.M.
Журнал: Astronomy and Astrophysics
Том: 376
Номер: 3
Год издания: 2001
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: 928
Последняя страница: 940
DOI: 10.1051/0004-6361:20010967
Аннотация: The results of observations of the H2O maser emission (1.35 cm) of the Mira-type variable star RS Vir are presented. The observations were carried out in 1981-2001 on the RT-22 radio telescope of the Pushchino Radio Astronomy Observatory (Russia). The variability curve of the H2O maser emission integrated flux Fint(H2O) of RS Vir correlates with its visual light curve with some phase delay 0.05-0.35P (P is the star's period). The delay variations seem to be periodic at a timescale of 19-20 years ("superperiod" of the maser variations). If the variability of the H2O maser RS Vir is caused by periodic action of pulsation-driven shock waves, the shock travel time from the photosphere to the inner boundary of the H2O maser shell can be as long as (3-5)P. Another explanation is that maser variations may be connected with changing gas density in the masering region of the circumstellar envelope. In particular, long-term maser variations (the "superperiod" ) may be caused by changing mass loss rate.
Добавил в систему: Рудницкий Георгий Михайлович

	ИСТИНА	Войти в систему Регистрация
	ИПМех РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИПМех РАН

Variability of the H2O maser associated with the Mira variable RS Virginisстатья

Прикрепленные файлы