SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion

Autores
Qian S. B.; Jiang, L.Q.; Fernandez Lajus, Eduardo Eusebio; Soonthornthum B.; Zhu, L. Y.; Zhao, E. G.; He, J. J.; Liao, W. P.; Wang, J. J.; Liu, L.; Rattanasoon, S.; Aukkaravittayapun, S.; Zhou, X.; Liu, N. P.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
SDSS J001641-000925 is the first red-dwarf contact binary star with an orbital period of 0.19856 days that is one of the shortest known periods among M-dwarf binary systems. The orbital period was detected to be decreasing rapidly at the rate of dP/dt ~ 8 s/yr. This indicated that SDSS J001641-000925 was undergoing coalescence via a dynamical mass transfer or loss and thus this red-dwarf contact binary is dynamically unstable. To understand the properties of the period change, we monitored the binary system photometrically from September 2, 2011 to October 1, 2014 by using several telescopes in the world and 25 eclipse times were determined. It is discovered that the rapid decrease of the orbital period is not true. This is contrary to the prediction that the system is merging driven by rapid mass transfer or loss. Our preliminary analysis suggests that the Observed-Calculated (O-C) diagram shows a cyclic oscillation with an amplitude of 0.00255 days and a period of 5.7 years. The cyclic variation can be explained by the light-travel time effect via the presence of a cool stellar companion with a mass of M3 sin i′ ~ 0.14M⊙. The orbital separation between the third body and the central binary is about 2.8AU. These results reveal that the rarity of red-dwarf contact binaries could not be explained by rapidly dynamical destruction and the presence of the third body helps to form the red-dwarf contact binary.
Fil: Qian S. B.. Chinese Academy Of Sciences; República de China
Fil: Jiang, L.Q.. Chinese Academy Of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Soonthornthum B.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Zhu, L. Y. . Chinese Academy Of Sciences; República de China
Fil: Zhao, E. G. . Chinese Academy Of Sciences; República de China
Fil: He, J. J. . Chinese Academy Of Sciences; República de China
Fil: Liao, W. P. . Chinese Academy Of Sciences; República de China
Fil: Wang, J. J. . Chinese Academy Of Sciences; República de China
Fil: Liu, L.. Chinese Academy Of Sciences; República de China
Fil: Rattanasoon, S.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Aukkaravittayapun, S.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Zhou, X.. Chinese Academy Of Sciences; República de China
Fil: Liu, N. P. . Chinese Academy Of Sciences; República de China
Materia
Close Binaries
Eclipsing Binaries
Sdss J001641-000925 (Estrella)
Evolution of Stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11157
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11157
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companionQian S. B.Jiang, L.Q.Fernandez Lajus, Eduardo EusebioSoonthornthum B.Zhu, L. Y. Zhao, E. G. He, J. J. Liao, W. P. Wang, J. J. Liu, L.Rattanasoon, S.Aukkaravittayapun, S.Zhou, X.Liu, N. P. Close BinariesEclipsing BinariesSdss J001641-000925 (Estrella)Evolution of Starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1SDSS J001641-000925 is the first red-dwarf contact binary star with an orbital period of 0.19856 days that is one of the shortest known periods among M-dwarf binary systems. The orbital period was detected to be decreasing rapidly at the rate of dP/dt ~ 8 s/yr. This indicated that SDSS J001641-000925 was undergoing coalescence via a dynamical mass transfer or loss and thus this red-dwarf contact binary is dynamically unstable. To understand the properties of the period change, we monitored the binary system photometrically from September 2, 2011 to October 1, 2014 by using several telescopes in the world and 25 eclipse times were determined. It is discovered that the rapid decrease of the orbital period is not true. This is contrary to the prediction that the system is merging driven by rapid mass transfer or loss. Our preliminary analysis suggests that the Observed-Calculated (O-C) diagram shows a cyclic oscillation with an amplitude of 0.00255 days and a period of 5.7 years. The cyclic variation can be explained by the light-travel time effect via the presence of a cool stellar companion with a mass of M3 sin i′ ~ 0.14M⊙. The orbital separation between the third body and the central binary is about 2.8AU. These results reveal that the rarity of red-dwarf contact binaries could not be explained by rapidly dynamical destruction and the presence of the third body helps to form the red-dwarf contact binary.Fil: Qian S. B.. Chinese Academy Of Sciences; República de ChinaFil: Jiang, L.Q.. Chinese Academy Of Sciences; República de ChinaFil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Soonthornthum B.. National Astronomical Research Insititude of Thailand; TailandiaFil: Zhu, L. Y. . Chinese Academy Of Sciences; República de ChinaFil: Zhao, E. G. . Chinese Academy Of Sciences; República de ChinaFil: He, J. J. . Chinese Academy Of Sciences; República de ChinaFil: Liao, W. P. . Chinese Academy Of Sciences; República de ChinaFil: Wang, J. J. . Chinese Academy Of Sciences; República de ChinaFil: Liu, L.. Chinese Academy Of Sciences; República de ChinaFil: Rattanasoon, S.. National Astronomical Research Insititude of Thailand; TailandiaFil: Aukkaravittayapun, S.. National Astronomical Research Insititude of Thailand; TailandiaFil: Zhou, X.. Chinese Academy Of Sciences; República de ChinaFil: Liu, N. P. . Chinese Academy Of Sciences; República de ChinaIOP Publishing2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11157Qian S. B.; Jiang, L.Q.; Fernandez Lajus, Eduardo Eusebio; Soonthornthum B.; Zhu, L. Y. ; et al.; SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion; IOP Publishing; Astrophysical Journal Letters; 798; 2; 1-2015; 42-452041-8205enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/798/2/L42info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/798/2/L42/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:27:41Zoai:ri.conicet.gov.ar:11336/11157instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:27:41.414CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
title SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
spellingShingle SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
Qian S. B.
Close Binaries
Eclipsing Binaries
Sdss J001641-000925 (Estrella)
Evolution of Stars
title_short SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
title_full SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
title_fullStr SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
title_full_unstemmed SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
title_sort SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion
dc.creator.none.fl_str_mv Qian S. B.
Jiang, L.Q.
Fernandez Lajus, Eduardo Eusebio
Soonthornthum B.
Zhu, L. Y.
Zhao, E. G.
He, J. J.
Liao, W. P.
Wang, J. J.
Liu, L.
Rattanasoon, S.
Aukkaravittayapun, S.
Zhou, X.
Liu, N. P.
author Qian S. B.
author_facet Qian S. B.
Jiang, L.Q.
Fernandez Lajus, Eduardo Eusebio
Soonthornthum B.
Zhu, L. Y.
Zhao, E. G.
He, J. J.
Liao, W. P.
Wang, J. J.
Liu, L.
Rattanasoon, S.
Aukkaravittayapun, S.
Zhou, X.
Liu, N. P.
author_role author
author2 Jiang, L.Q.
Fernandez Lajus, Eduardo Eusebio
Soonthornthum B.
Zhu, L. Y.
Zhao, E. G.
He, J. J.
Liao, W. P.
Wang, J. J.
Liu, L.
Rattanasoon, S.
Aukkaravittayapun, S.
Zhou, X.
Liu, N. P.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Close Binaries
Eclipsing Binaries
Sdss J001641-000925 (Estrella)
Evolution of Stars
topic Close Binaries
Eclipsing Binaries
Sdss J001641-000925 (Estrella)
Evolution of Stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv SDSS J001641-000925 is the first red-dwarf contact binary star with an orbital period of 0.19856 days that is one of the shortest known periods among M-dwarf binary systems. The orbital period was detected to be decreasing rapidly at the rate of dP/dt ~ 8 s/yr. This indicated that SDSS J001641-000925 was undergoing coalescence via a dynamical mass transfer or loss and thus this red-dwarf contact binary is dynamically unstable. To understand the properties of the period change, we monitored the binary system photometrically from September 2, 2011 to October 1, 2014 by using several telescopes in the world and 25 eclipse times were determined. It is discovered that the rapid decrease of the orbital period is not true. This is contrary to the prediction that the system is merging driven by rapid mass transfer or loss. Our preliminary analysis suggests that the Observed-Calculated (O-C) diagram shows a cyclic oscillation with an amplitude of 0.00255 days and a period of 5.7 years. The cyclic variation can be explained by the light-travel time effect via the presence of a cool stellar companion with a mass of M3 sin i′ ~ 0.14M⊙. The orbital separation between the third body and the central binary is about 2.8AU. These results reveal that the rarity of red-dwarf contact binaries could not be explained by rapidly dynamical destruction and the presence of the third body helps to form the red-dwarf contact binary.
Fil: Qian S. B.. Chinese Academy Of Sciences; República de China
Fil: Jiang, L.Q.. Chinese Academy Of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Soonthornthum B.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Zhu, L. Y. . Chinese Academy Of Sciences; República de China
Fil: Zhao, E. G. . Chinese Academy Of Sciences; República de China
Fil: He, J. J. . Chinese Academy Of Sciences; República de China
Fil: Liao, W. P. . Chinese Academy Of Sciences; República de China
Fil: Wang, J. J. . Chinese Academy Of Sciences; República de China
Fil: Liu, L.. Chinese Academy Of Sciences; República de China
Fil: Rattanasoon, S.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Aukkaravittayapun, S.. National Astronomical Research Insititude of Thailand; Tailandia
Fil: Zhou, X.. Chinese Academy Of Sciences; República de China
Fil: Liu, N. P. . Chinese Academy Of Sciences; República de China
description SDSS J001641-000925 is the first red-dwarf contact binary star with an orbital period of 0.19856 days that is one of the shortest known periods among M-dwarf binary systems. The orbital period was detected to be decreasing rapidly at the rate of dP/dt ~ 8 s/yr. This indicated that SDSS J001641-000925 was undergoing coalescence via a dynamical mass transfer or loss and thus this red-dwarf contact binary is dynamically unstable. To understand the properties of the period change, we monitored the binary system photometrically from September 2, 2011 to October 1, 2014 by using several telescopes in the world and 25 eclipse times were determined. It is discovered that the rapid decrease of the orbital period is not true. This is contrary to the prediction that the system is merging driven by rapid mass transfer or loss. Our preliminary analysis suggests that the Observed-Calculated (O-C) diagram shows a cyclic oscillation with an amplitude of 0.00255 days and a period of 5.7 years. The cyclic variation can be explained by the light-travel time effect via the presence of a cool stellar companion with a mass of M3 sin i′ ~ 0.14M⊙. The orbital separation between the third body and the central binary is about 2.8AU. These results reveal that the rarity of red-dwarf contact binaries could not be explained by rapidly dynamical destruction and the presence of the third body helps to form the red-dwarf contact binary.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11157
Qian S. B.; Jiang, L.Q.; Fernandez Lajus, Eduardo Eusebio; Soonthornthum B.; Zhu, L. Y. ; et al.; SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion; IOP Publishing; Astrophysical Journal Letters; 798; 2; 1-2015; 42-45
2041-8205
url http://hdl.handle.net/11336/11157
identifier_str_mv Qian S. B.; Jiang, L.Q.; Fernandez Lajus, Eduardo Eusebio; Soonthornthum B.; Zhu, L. Y. ; et al.; SDSS J001641-000925: the First Stable Red-dwarf contact binary with a close-in stellar companion; IOP Publishing; Astrophysical Journal Letters; 798; 2; 1-2015; 42-45
2041-8205
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/798/2/L42
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/798/2/L42/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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