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Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii
Han ZT(韩忠涛)1,2,3; Qian SB(钱声帮)1,2,3; Fernandez-Lajus, Eduardo4,5; Voloshina, Irina6; Zhu LY(朱俐颖)1,2,3
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2017-06-01
Volume69Issue:3Pages:55-63
DOI10.1093/pasj/psx030
Contribution Rank第1完成单位
Indexed BySCI
Keywordbinaries: eclipsing novae, cataclysmic variables stars: individual (V729 Sagittarii)
Abstract

We present the analysis results of an eclipsing cataclysmic variable (CV) V729 Sgr, based on our observations and American Association of Variable Star Observers data. Some outburst parameters are determined, such as outburst amplitude (An) and recurrence time (T-n), and then the relationship between An and Tn is discussed. A cursory examination of the long-term light curves reveals that there are small-amplitude outbursts and dips present, which is similar to the behavior seen in some novalike CVs (NLs). More detailed inspection suggests that the outbursts in V729 Sgr may be Type A (outside-in) with a rise time similar to 1.76 d. Further analysis also shows that V729 Sgr is an intermediate between dwarf nova and NLs, and we constrain its mass transfer rate to 1.59 x 10(-9) < M-2 < 5.8 x 10(-9) M-circle dot yr(-1) by combining the theory for ZCam type stars with observations. Moreover, the rapid oscillations in V729 Sgr were detected and analyzed for the first time. Our results indicate that the oscillation at similar to 25.5 s is a true dwarf nova oscillation (DNO), being associated with the accretion events. The classification of the oscillations at similar to 136 and 154 s as longer-period DNOs (lpDNOs) is based on the relation between P-lpDNOs and P-DNOs. Meanwhile, quasi-periodic oscillations with periods of hundreds of seconds are also detected.

Funding ProjectChinese Natural Science Foundation[11325315] ; Chinese Natural Science Foundation[11611530685] ; Chinese Natural Science Foundation[11573063] ; Strategic Priority Research Program
Funding OrganizationChinese Natural Science Foundation[11325315, 11611530685, 11573063] ; Strategic Priority Research Program
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
Archive Date2017-06-28
WOS IDWOS:000404642800020
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordQUASI-PERIODIC OSCILLATIONS ; DWARF NOVA OSCILLATIONS ; EQUATORIAL IRREGULAR VARIABLES ; STUNTED OUTBURSTS ; VW-HYI ; SPACED DATA ; SOUTHERN ; MODEL ; SPECTROSCOPY ; SIMILARITIES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10147
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorHan ZT(韩忠涛)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
3.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing City, China
4.Facultad de Ciencias Astronomicas y Geof ´ ´ısicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900, La Plata, Pcia. Bs. As., Argentina
5.Instituto de Astrof´ısica de La Plata (CCT La plata - CONICET/UNLP), Argentina
6.Sternberg Astronomical Institute, Moscow State University, Universitetskij prospect 13, Moscow 119992 Russia
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Han ZT,Qian SB,Fernandez-Lajus, Eduardo,et al. Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2017,69(3):55-63.
APA Han ZT,Qian SB,Fernandez-Lajus, Eduardo,Voloshina, Irina,&Zhu LY.(2017).Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,69(3),55-63.
MLA Han ZT,et al."Long-term photometric behavior of the eclipsing cataclysmic variable V729 Sagittarii".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 69.3(2017):55-63.
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