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Photometric and Spectroscopic Studies of Superoutbursts of Three Dwarf Novae Independently Identified by the SVOM/GWAC System in 2018
Wang, J.1,2; Li, H. L.2; Xin, L. P.2; Han, X. H.2; Meng, X. M.2; Brink, T. G.3; Cai, H. B.2; Dai, Z. G.4; Filippenko, A. V.3; Hsia, C. -H.5; Huang, L.2; Jia, L.2; Li, G. W.2; Li YB(李宇斌)6,7,8; Liang, E. W.1; Lu, X. M.2; Mao JR(毛基荣)6,7,9; Qiu, P.10; Qiu, Y. L.2; Ren, J. J.10; Turpin, D.2; Wang, H. J.10; Wang, X. G.1; Wang, X. Y.4; Wu, C.2,8; Xu, Y.2,8; Yan, J. Z.11; Zhang,J. B.10; Zheng, W.3; Wei, J. Y.2,8
Source PublicationASTRONOMICAL JOURNAL
2020-02-01
Volume159Issue:2Pages:14
DOI10.3847/1538-3881/ab5855
Contribution Rank第6完成单位
Indexed BySCI
Abstract

We report our photometric and spectroscopic follow-up observations of the superoutbursts of three dwarf novae (DNe; GWAC 180415A, GWAC 181017A, and GWAC 181211A) identified independently by the Ground Wide-angle Cameras system, one of the ground-based instruments of the China-France SVOM mission. Based on a combination of our photometry and that taken from the American Association of Variable Star Observers, our period analysis of the superhumps enables us to determine the mass ratios to be 0.0967-0.1163, 0.1879-0.1883, and 0.0981-0.1173 for GWAC 180415A, GWAC 181017A, and GWAC 181211A, respectively. GWAC 180415A can be firmly identified as a WZ sge-type DNe due to its long duration (similar to 2 weeks) multiple rebrightenings with amplitudes of 3-4 mag, the early superhump associated with a double-wave modulation and the low-mass ratio. The inferred low-mass ratio and location in the diagram suggest that GWAC 181211A is a WZ sge-type DNe candidate. The measured Balmer decrements suggest the Balmer line emission is produced from an optical thick region in GWAC 180415A and GWAC 181017A, and from an optically thin region in GWAC 181211A.

Funding ProjectN/A
Funding OrganizationN/A
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000519798400001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCATACLYSMIC VARIABLES ; ACCRETION DISKS ; WZ SAGITTAE ; URSAE MAJORIS ; MASS-TRANSFER ; LIGHT CURVES ; DATA RELEASE ; PERIOD GAP ; SUPERHUMPS ; SEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/21620
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorWang, J.
Affiliation1.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, People's Republic of China
2.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
3.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
4.School of Astronomy and Space Science, Nanjing University, Nanjing, 210000, People's Republic of China
5.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Taipa, Macau, 999078, People's Republic of China
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
7.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China
8.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, People's Republic of China
9.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
10.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
11.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210034, People's Republic of China
Recommended Citation
GB/T 7714
Wang, J.,Li, H. L.,Xin, L. P.,et al. Photometric and Spectroscopic Studies of Superoutbursts of Three Dwarf Novae Independently Identified by the SVOM/GWAC System in 2018[J]. ASTRONOMICAL JOURNAL,2020,159(2):14.
APA Wang, J..,Li, H. L..,Xin, L. P..,Han, X. H..,Meng, X. M..,...&Wei, J. Y..(2020).Photometric and Spectroscopic Studies of Superoutbursts of Three Dwarf Novae Independently Identified by the SVOM/GWAC System in 2018.ASTRONOMICAL JOURNAL,159(2),14.
MLA Wang, J.,et al."Photometric and Spectroscopic Studies of Superoutbursts of Three Dwarf Novae Independently Identified by the SVOM/GWAC System in 2018".ASTRONOMICAL JOURNAL 159.2(2020):14.
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