YNAO OpenIR  > 双星与变星研究组
Evolution and Outbursts of Cataclysmic Variables
Qian SB(钱声帮)1,2,3; Zhu LY(朱俐颖)1,2,3; Zhao EG(赵二刚)1,2; E. Fern´andez Laj´us4,5; Zhang J(张嘉)1,2; Shi G(时光)1,2; Han ZT(韩忠涛)1,2
Source PublicationActa Polytechnica CTU Proceedings
Contribution Rank第1完成单位
Indexed By其他
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KeywordCataclysmic Variables - Polars - Photometry - Individual: Hu Aqr Dp Leo Mn Hya And V2301 Oph

Mass transfer and accretion are very important to understand the evolution and observational properties of cataclysmic variables (CVs). Due to the lack of an accretion disk, eclipsing profiles of polars are the best source to study the character of mass transfer in CVs. By analyzing long-term photometric variations in the eclipsing polar HU Aqr, the property of mass transfer and accretion are investigated. The correlation between the brightness state change and the variation of the ingress profile suggests that both the accretion hot spot and the accretion stream are produced instantaneously. The observations clearly show that it is the variation of mass transfer causing the brightness state changes that is a direct evidence of variable mass transfer in a CV. It is shown that it is the local dark-spot activity near the L1 point to cause the change of the mass transfer rather than the activity cycles of the cool secondary star. Our results suggest that the evolution of CVs is more complex than that predicted by the standard model and we should consider the effect of variable mass accretion in nova and dwarf nova outbursts.

Funding ProjectChinese Natural Science Foundation through a key project[11133007]
Funding OrganizationChinese Natural Science Foundation through a key project
Subject Area天文学 ; 天体物理学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
Archive Date2015-06-04
Citation statistics
Document Type会议论文
Corresponding AuthorQian SB(钱声帮)
Affiliation1.Yunnan Observatories, Chinese Academy of Science, P. O. Box 110, 650011 Kunming, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China
4.Facultad de Ciencias Astron´omicas y Geof´ısicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires, Argentina
5.Instituto de Astro sica de La Plata (CCT La plata - CONICET/UNLP), Argentina
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Zhu LY,Zhao EG,et al. Evolution and Outbursts of Cataclysmic Variables[C],2015:152–155.
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