A dwarf nova in Taurus |
| |
Authors: | E A Parsamian G Gonzales G B Ohanian |
| |
Institution: | (1) V. A. Ambartsumian Byurakan Astrophysical Observatory, Armenia;(2) 2Nalional Institute of Astrophysics, Optics, and Electronics (INAOE), Mexico |
| |
Abstract: | In searchs for flare stars in the vicinity of the Pleiades cluster, three flares were detected in 1970,1972, and 1977 in a
star with the coordinates α
1950
= 3
h
48
m
·9, δ
l950
= 25‡15’.8. The star’s brightness at a minimum is >21
m
·5. The star was tentatively assigned to the U Gem type. To confirm this assumption, we examined photographic plates for the
period of 1947–1987. As a result, we found 12 more flares. The average recurrence time based on the 1963–1977 observations
is about 330 days, and the maximum flare amplitude is >6
m
.Narrow superflares and steady-state flares lasting over 40 days have been observed in the star. The results show that this
is a dwarf nova of the UGSU subtype.
Translated from Astrofizika, Vol. 42, No. 1, pp. 47–52, January–March, 1999. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|