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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/138697
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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 Técnicas2025-09-03T09:46:35Zoai: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:34982025-09-03 09:46:35.471CONICET 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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1842268804689690624 |
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13.13397 |