Study of a long and short—term variability of ER Ursae Majoris

In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 43, no. 3

P. Zemko - S. Shugarov - T. Kato - N. Katysheva

Detaily:

Rok, strany: 2014, 319 - 324

Kľúčové slová:

stars: dwarf novae, stars: individual (ER UMa)

URL originálneho zdroja: http://www.astro.sk/caosp/Eedition/Abstracts/2014/Vol_43/No_3/pp319-324_abstract.html

Full text

O článku:

We present the results of our study of a long and short-term variability of ER UMa. Obtained light curves revealed presence of superhumps during the whole supercycle. The superhumps period was not stable but varying from night to night. The O-C diagram suggests that both positive and negative superhumps were present. The form of the O-C digram is consistent with recently presented Kepler data of another SU UMa-type star — V1504 Cyg. We also examined data of about 20 years of observations of ER UMa from different databases. The O-C diagram for the moments of superoutbursts revealed a systematic change of the supercycle within 43.6 and 59.2 d. We associate these variations with the changes of a mass transfer rate.

Ako citovať:

ISO 690:

Zemko, P., Shugarov, S., Kato, T., Katysheva, N. 2014. Study of a long and short—term variability of ER Ursae Majoris. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 43, no.3, pp. 319-324. 1335-1842.

APA:

Zemko, P., Shugarov, S., Kato, T., Katysheva, N. (2014). Study of a long and short—term variability of ER Ursae Majoris. Contributions of the Astronomical Observatory Skalnaté Pleso, 43(3), 319-324. 1335-1842.