First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149

ASAS J105115-6032.1 (hereafter ASAS J1051) and GDS J1056047-604149 (hereafter GDS J1056) are two short-period contact binaries close to each other in the Antarctica sky area. By analyzing the light curves from AST3-1, the first photometric solutions are presented using the Wilson-Devinney (W-D) meth...

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Published in:New Astronomy
Main Authors: Li FX(李福兴), Liu NP(刘念平), Soonthornthum, Boonrucksar, Sarotsakulchai, Thawicharat
Format: Article in Journal/Newspaper
Language:English
Published: ELSEVIER 2022
Subjects:
Online Access:http://ir.ynao.ac.cn/handle/114a53/25283
https://doi.org/10.1016/j.newast.2021.101756
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spelling ftchinacadscynao:oai:ir.ynao.ac.cn:114a53/25283 2023-07-02T03:30:25+02:00 First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149 Li FX(李福兴) Liu NP(刘念平) Soonthornthum, Boonrucksar Sarotsakulchai, Thawicharat 2022-05 http://ir.ynao.ac.cn/handle/114a53/25283 https://doi.org/10.1016/j.newast.2021.101756 英语 eng ELSEVIER NEW ASTRONOMY http://ir.ynao.ac.cn/handle/114a53/25283 https://dx.doi.org/10.1016/j.newast.2021.101756 doi:10.1016/j.newast.2021.101756 cn.org.cspace.api.content.CopyrightPolicy@42847d94 Stars: binaries: close Stars: binaries: eclipsing Stars: individual (ASAS J105115-6032.1 GDS J1056047-604149) 天文学 天文学::恒星与银河系 天文学::恒星与银河系::恒星形成与演化 理学 理学::天文学 Astronomy & Astrophysics CONTACT BINARIES CATALOG RELEASE SYSTEM STARS DOME Article 期刊论文 2022 ftchinacadscynao https://doi.org/10.1016/j.newast.2021.101756 2023-06-09T00:18:56Z ASAS J105115-6032.1 (hereafter ASAS J1051) and GDS J1056047-604149 (hereafter GDS J1056) are two short-period contact binaries close to each other in the Antarctica sky area. By analyzing the light curves from AST3-1, the first photometric solutions are presented using the Wilson-Devinney (W-D) method. It is detected that both systems are W-type contact binaries with mass ratios of q = 3.2621(0.0083) and q = 4.843(0.014), respectively. Both of them have a moderate degree of contact factor of I = 46.9(1.2)% and I = 43.9(1.2)%. The asymmetries in the light curve of the intermediate-contact system GDS J1056 (strong O'Connell effect) are interpreted by a dark spot on the more massive component. For the first time, we carried out the O - C diagram analysis based on many photometric data. The results indicate an orbital period increase at a rate of dP/dt = +5.28 x 10(-7)d.- for ASAS J10511. As for GDS J1056, a period decrease of dP/dt = -5.41 x 10(-7) d.yr(-1), superimposed with a cyclic period change with a semi-amplitude of 0.00744 d and a period of 11.97 yr, is discovered. The cyclic period change may be caused by the light travel-time effect via the presence of a tertiary companion with a lowest mass of M-3 = 0.35(0.03)M-circle dot. The period increase in ASAS J1051 can be explained by the mass transfer from the less massive component to its companion. In contrast, the period decrease in GDS J1056 reveals an opposite direction of mass transfer. The facts suggest that these two intermediate-contact binaries will evolve into shallow-and deep-contact binary systems. Article in Journal/Newspaper Antarc* Antarctica Yunnan Observatories: YNAO OpenIR (Chinese Academy of Sciences, CAS) New Astronomy 93 101756
institution Open Polar
collection Yunnan Observatories: YNAO OpenIR (Chinese Academy of Sciences, CAS)
op_collection_id ftchinacadscynao
language English
topic Stars: binaries: close
Stars: binaries: eclipsing
Stars: individual (ASAS J105115-6032.1
GDS J1056047-604149)
天文学
天文学::恒星与银河系
天文学::恒星与银河系::恒星形成与演化
理学
理学::天文学
Astronomy & Astrophysics
CONTACT BINARIES
CATALOG
RELEASE
SYSTEM
STARS
DOME
spellingShingle Stars: binaries: close
Stars: binaries: eclipsing
Stars: individual (ASAS J105115-6032.1
GDS J1056047-604149)
天文学
天文学::恒星与银河系
天文学::恒星与银河系::恒星形成与演化
理学
理学::天文学
Astronomy & Astrophysics
CONTACT BINARIES
CATALOG
RELEASE
SYSTEM
STARS
DOME
Li FX(李福兴)
Liu NP(刘念平)
Soonthornthum, Boonrucksar
Sarotsakulchai, Thawicharat
First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
topic_facet Stars: binaries: close
Stars: binaries: eclipsing
Stars: individual (ASAS J105115-6032.1
GDS J1056047-604149)
天文学
天文学::恒星与银河系
天文学::恒星与银河系::恒星形成与演化
理学
理学::天文学
Astronomy & Astrophysics
CONTACT BINARIES
CATALOG
RELEASE
SYSTEM
STARS
DOME
description ASAS J105115-6032.1 (hereafter ASAS J1051) and GDS J1056047-604149 (hereafter GDS J1056) are two short-period contact binaries close to each other in the Antarctica sky area. By analyzing the light curves from AST3-1, the first photometric solutions are presented using the Wilson-Devinney (W-D) method. It is detected that both systems are W-type contact binaries with mass ratios of q = 3.2621(0.0083) and q = 4.843(0.014), respectively. Both of them have a moderate degree of contact factor of I = 46.9(1.2)% and I = 43.9(1.2)%. The asymmetries in the light curve of the intermediate-contact system GDS J1056 (strong O'Connell effect) are interpreted by a dark spot on the more massive component. For the first time, we carried out the O - C diagram analysis based on many photometric data. The results indicate an orbital period increase at a rate of dP/dt = +5.28 x 10(-7)d.- for ASAS J10511. As for GDS J1056, a period decrease of dP/dt = -5.41 x 10(-7) d.yr(-1), superimposed with a cyclic period change with a semi-amplitude of 0.00744 d and a period of 11.97 yr, is discovered. The cyclic period change may be caused by the light travel-time effect via the presence of a tertiary companion with a lowest mass of M-3 = 0.35(0.03)M-circle dot. The period increase in ASAS J1051 can be explained by the mass transfer from the less massive component to its companion. In contrast, the period decrease in GDS J1056 reveals an opposite direction of mass transfer. The facts suggest that these two intermediate-contact binaries will evolve into shallow-and deep-contact binary systems.
format Article in Journal/Newspaper
author Li FX(李福兴)
Liu NP(刘念平)
Soonthornthum, Boonrucksar
Sarotsakulchai, Thawicharat
author_facet Li FX(李福兴)
Liu NP(刘念平)
Soonthornthum, Boonrucksar
Sarotsakulchai, Thawicharat
author_sort Li FX(李福兴)
title First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
title_short First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
title_full First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
title_fullStr First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
title_full_unstemmed First photometric investigation of two short-period eclipsing binaries ASAS J105115-6032.1 and GDS J1056047-604149
title_sort first photometric investigation of two short-period eclipsing binaries asas j105115-6032.1 and gds j1056047-604149
publisher ELSEVIER
publishDate 2022
url http://ir.ynao.ac.cn/handle/114a53/25283
https://doi.org/10.1016/j.newast.2021.101756
genre Antarc*
Antarctica
genre_facet Antarc*
Antarctica
op_relation NEW ASTRONOMY
http://ir.ynao.ac.cn/handle/114a53/25283
https://dx.doi.org/10.1016/j.newast.2021.101756
doi:10.1016/j.newast.2021.101756
op_rights cn.org.cspace.api.content.CopyrightPolicy@42847d94
op_doi https://doi.org/10.1016/j.newast.2021.101756
container_title New Astronomy
container_volume 93
container_start_page 101756
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