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First multi-band CCD photometric study for two eclipsing binaries: ASAS J212234-4627.6 and ASAS J212319-4622.4
Lu, Hong-Peng1,2; Zhang, Li-Yun1,2; Han, Xianming L.1,3; Li, Tong-An1,2
Source PublicationNEW ASTRONOMY
2018-10-01
Volume64Pages:1-8
DOI10.1016/j.newast.2018.04.001
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual (Asas J212234-4627.6 And Asas J212319-4622.4)
Abstract

We present the first BVRI bands CCD photometric light curves of ASAS J212234-4627.6 and ASAS J212319-4622.4 observed with the SARA 0.6-m telescope at the Cerro Telolo Inter-American Observatory (CTIO), Chile on August 16, and September 28, 2014. From our multi-band photometry data, we obtained three minimum light times of ASAS J212234-4627.6 and four minimum light times of ASAS 3212319-4622.4. We used the least square method to fit the minimum light times and got the linear ephemeris for the two eclipsing binary systems. Using the WD program, we solved the photometric solutions of the two objects: The photometric solution of ASAS J212234-4627.6 indicates that it is a semi-contact eclipsing binary star, the secondary component accurately filling its limiting lobe, and the asymmetry of the light curves may be due to the presence of a dark spot on the primary component; the photometric solution of ASAS J212319-4622.4 shows that it is a contact eclipsing binary system with a contact factor f = 5.899 (+/- 0.003)%. In addition, we also estimated the global parameters and the evolution state of the two objects. The Log T-eff.Log (L/L-sun) diagram shows that the primary and secondary components of ASAS J212234-4627.6 and ASAS J212319-4622.4 are all MS stars.

Funding ProjectNational Natural Science Foundation of China[U1631236] ; National Natural Science Foundation of China[U1431114] ; Chinese Academy of Sciences[U1631236] ; Chinese Academy of Sciences[U1431114] ; Guizhou Science and Technology project[20175788]
Funding OrganizationNational Natural Science Foundation of China[U1631236, U1431114] ; Chinese Academy of Sciences[U1631236, U1431114] ; Guizhou Science and Technology project[20175788]
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherELSEVIER SCIENCE BV
ISSN1384-1076
URL查看原文
WOS IDWOS:000442301100001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSky Automated Survey ; Southern-hemisphere ; Variable-stars ; Catalog ; Quarter ; Light ; Curves
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17877
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Li-Yun
Affiliation1.College of Physics & Guizhou Provincial Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.Department of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA
Recommended Citation
GB/T 7714
Lu, Hong-Peng,Zhang, Li-Yun,Han, Xianming L.,et al. First multi-band CCD photometric study for two eclipsing binaries: ASAS J212234-4627.6 and ASAS J212319-4622.4[J]. NEW ASTRONOMY,2018,64:1-8.
APA Lu, Hong-Peng,Zhang, Li-Yun,Han, Xianming L.,&Li, Tong-An.(2018).First multi-band CCD photometric study for two eclipsing binaries: ASAS J212234-4627.6 and ASAS J212319-4622.4.NEW ASTRONOMY,64,1-8.
MLA Lu, Hong-Peng,et al."First multi-band CCD photometric study for two eclipsing binaries: ASAS J212234-4627.6 and ASAS J212319-4622.4".NEW ASTRONOMY 64(2018):1-8.
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