A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825

Autores
Zhu, Li-Ying; Qian, Sheng Bang; Fernandez Lajus, Eduardo Eusebio; Wang, Zhi Hua; Li, Lin Jia
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
NSVS 14256825 is the second sdOB + dM eclipsing binary systems with anorbital period of 2.65 hours. The special binary was reported to contain circumbinary planets or brown dwarfs by using the timing method. However, different results were derived by different authors because of the insufficient coverage of eclipse timings. Since 2008, we have monitored this binary for about 10 years by using several telescopes and 84 new times of light minimum in high precision were obtained. It is found that the O-C curve is increasing recently and it shows a cyclic variation with a period of 8.83 years and amplitude of 46.31 seconds. The cyclic change cannot be explained by magnetic activity cycles of the red-dwarf component because the required energy is much larger than that radiated by this component in one whole period. This cyclic change detected in NSVS1425 could be explained by the light-travel time effect via the presence of a third body. The lowest mass of the third body is determined as 14.15 Mjup that is in the transition between planets and brown dwarfs. The substellar object is orbiting around this evolved binary at an orbital separation around 3 AU with an eccentricity of 0.12. These results indicate that NSVS 14256825 is the first sdOB-type eclipsing binary consisting of a hierarchical substellar object. The detection of a close-in substellar companion to NSVS 14256825 will provide some insights on the formation and evolution of sdOB-type binaries and their companions.
Fil: Zhu, Li-Ying. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Qian, Sheng Bang. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Wang, Zhi Hua. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Li, Lin Jia. Yunnan Observatories, Chinese Academy Of Sciences; China
Materia
binaries : close
binaries : eclipsing
stars : evolution
stars: individual (NSVS14256825)
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:11336/138697
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/138697
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825Zhu, Li-YingQian, Sheng BangFernandez Lajus, Eduardo EusebioWang, Zhi HuaLi, Lin Jiabinaries : closebinaries : eclipsingstars : evolutionstars: individual (NSVS14256825)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1NSVS 14256825 is the second sdOB + dM eclipsing binary systems with anorbital period of 2.65 hours. The special binary was reported to contain circumbinary planets or brown dwarfs by using the timing method. However, different results were derived by different authors because of the insufficient coverage of eclipse timings. Since 2008, we have monitored this binary for about 10 years by using several telescopes and 84 new times of light minimum in high precision were obtained. It is found that the O-C curve is increasing recently and it shows a cyclic variation with a period of 8.83 years and amplitude of 46.31 seconds. The cyclic change cannot be explained by magnetic activity cycles of the red-dwarf component because the required energy is much larger than that radiated by this component in one whole period. This cyclic change detected in NSVS1425 could be explained by the light-travel time effect via the presence of a third body. The lowest mass of the third body is determined as 14.15 Mjup that is in the transition between planets and brown dwarfs. The substellar object is orbiting around this evolved binary at an orbital separation around 3 AU with an eccentricity of 0.12. These results indicate that NSVS 14256825 is the first sdOB-type eclipsing binary consisting of a hierarchical substellar object. The detection of a close-in substellar companion to NSVS 14256825 will provide some insights on the formation and evolution of sdOB-type binaries and their companions.Fil: Zhu, Li-Ying. Yunnan Observatories, Chinese Academy Of Sciences; ChinaFil: Qian, Sheng Bang. Yunnan Observatories, Chinese Academy Of Sciences; ChinaFil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Wang, Zhi Hua. Yunnan Observatories, Chinese Academy Of Sciences; ChinaFil: Li, Lin Jia. Yunnan Observatories, Chinese Academy Of Sciences; ChinaNational Astronomical Observatories2019-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/138697Zhu, Li-Ying; Qian, Sheng Bang; Fernandez Lajus, Eduardo Eusebio; Wang, Zhi Hua; Li, Lin Jia; A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825; National Astronomical Observatories; Research In Astronomy And Astrophysics; 19; 9; 9-2019; 1-81674-4527CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1674-4527/19/9/134info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1674-4527/19/9/134info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:54Zoai:ri.conicet.gov.ar:11336/138697instacron: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 09:37:55.173CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
title A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
spellingShingle A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
Zhu, Li-Ying
binaries : close
binaries : eclipsing
stars : evolution
stars: individual (NSVS14256825)
title_short A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
title_full A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
title_fullStr A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
title_full_unstemmed A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
title_sort A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
dc.creator.none.fl_str_mv Zhu, Li-Ying
Qian, Sheng Bang
Fernandez Lajus, Eduardo Eusebio
Wang, Zhi Hua
Li, Lin Jia
author Zhu, Li-Ying
author_facet Zhu, Li-Ying
Qian, Sheng Bang
Fernandez Lajus, Eduardo Eusebio
Wang, Zhi Hua
Li, Lin Jia
author_role author
author2 Qian, Sheng Bang
Fernandez Lajus, Eduardo Eusebio
Wang, Zhi Hua
Li, Lin Jia
author2_role author
author
author
author
dc.subject.none.fl_str_mv binaries : close
binaries : eclipsing
stars : evolution
stars: individual (NSVS14256825)
topic binaries : close
binaries : eclipsing
stars : evolution
stars: individual (NSVS14256825)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv NSVS 14256825 is the second sdOB + dM eclipsing binary systems with anorbital period of 2.65 hours. The special binary was reported to contain circumbinary planets or brown dwarfs by using the timing method. However, different results were derived by different authors because of the insufficient coverage of eclipse timings. Since 2008, we have monitored this binary for about 10 years by using several telescopes and 84 new times of light minimum in high precision were obtained. It is found that the O-C curve is increasing recently and it shows a cyclic variation with a period of 8.83 years and amplitude of 46.31 seconds. The cyclic change cannot be explained by magnetic activity cycles of the red-dwarf component because the required energy is much larger than that radiated by this component in one whole period. This cyclic change detected in NSVS1425 could be explained by the light-travel time effect via the presence of a third body. The lowest mass of the third body is determined as 14.15 Mjup that is in the transition between planets and brown dwarfs. The substellar object is orbiting around this evolved binary at an orbital separation around 3 AU with an eccentricity of 0.12. These results indicate that NSVS 14256825 is the first sdOB-type eclipsing binary consisting of a hierarchical substellar object. The detection of a close-in substellar companion to NSVS 14256825 will provide some insights on the formation and evolution of sdOB-type binaries and their companions.
Fil: Zhu, Li-Ying. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Qian, Sheng Bang. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Wang, Zhi Hua. Yunnan Observatories, Chinese Academy Of Sciences; China
Fil: Li, Lin Jia. Yunnan Observatories, Chinese Academy Of Sciences; China
description NSVS 14256825 is the second sdOB + dM eclipsing binary systems with anorbital period of 2.65 hours. The special binary was reported to contain circumbinary planets or brown dwarfs by using the timing method. However, different results were derived by different authors because of the insufficient coverage of eclipse timings. Since 2008, we have monitored this binary for about 10 years by using several telescopes and 84 new times of light minimum in high precision were obtained. It is found that the O-C curve is increasing recently and it shows a cyclic variation with a period of 8.83 years and amplitude of 46.31 seconds. The cyclic change cannot be explained by magnetic activity cycles of the red-dwarf component because the required energy is much larger than that radiated by this component in one whole period. This cyclic change detected in NSVS1425 could be explained by the light-travel time effect via the presence of a third body. The lowest mass of the third body is determined as 14.15 Mjup that is in the transition between planets and brown dwarfs. The substellar object is orbiting around this evolved binary at an orbital separation around 3 AU with an eccentricity of 0.12. These results indicate that NSVS 14256825 is the first sdOB-type eclipsing binary consisting of a hierarchical substellar object. The detection of a close-in substellar companion to NSVS 14256825 will provide some insights on the formation and evolution of sdOB-type binaries and their companions.
publishDate 2019
dc.date.none.fl_str_mv 2019-09
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/11336/138697
Zhu, Li-Ying; Qian, Sheng Bang; Fernandez Lajus, Eduardo Eusebio; Wang, Zhi Hua; Li, Lin Jia; A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825; National Astronomical Observatories; Research In Astronomy And Astrophysics; 19; 9; 9-2019; 1-8
1674-4527
CONICET Digital
CONICET
url http://hdl.handle.net/11336/138697
identifier_str_mv Zhu, Li-Ying; Qian, Sheng Bang; Fernandez Lajus, Eduardo Eusebio; Wang, Zhi Hua; Li, Lin Jia; A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825; National Astronomical Observatories; Research In Astronomy And Astrophysics; 19; 9; 9-2019; 1-8
1674-4527
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1674-4527/19/9/134
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1674-4527/19/9/134
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
application/pdf
dc.publisher.none.fl_str_mv National Astronomical Observatories
publisher.none.fl_str_mv National Astronomical Observatories
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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