Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir

Autores
Qian, S.-B.; Zhu, L.-Y.; Dai, Z.-B.; Fernandez Lajus, Eduardo Eusebio; Xiang, F.-Y.; He, J.-J.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report here the tentative discovery of a Jovian planet in orbit around
the rapidly pulsating subdwarf B-type (sdB-type) eclipsing binary NY Vir. By using new determined eclipse times together those collected from the literature, we detect that the observed-calculated (O-C) curve of NY Vir shows a small-amplitude cyclic variation with a period of 7.9 years and a semiamplitude of 6.1 s, while it undergoes a downward parabolic change (revealing a period decrease at a rate of _dP/dt = -9.2 x 10^-12). The periodic variation was analyzed for the light-travel time effect via the presence of a third body. The mass of the tertiary companion was determined to be M3 sin i´ = 2.3(+/-0.3) MJupiter when a total mass of 0.60 Msun for NY Vir is adopted. This suggests that it most probably is a giant circumbinary planet orbiting NY Vir at a distance of about 3.3 astronomical units (AU). Since the rate of period decrease can not be explained by true angular momentum loss caused by gravitational radiation or/and magnetic braking, the observed downward parabolic change in the O-C diagram may be only a part of a long-period (longer than 15 years) cyclic variation, which may reveal the presence of another Jovian planet (about 2.5 MJupiter) in the system.
Fil: Qian, S.-B.. Chinese Academy of Sciences; República de China
Fil: Zhu, L.-Y.. Chinese Academy of Sciences; República de China
Fil: Dai, Z.-B.. Chinese Academy of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. 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: Xiang, F.-Y.. Xiangtan University; China
Fil: He, J.-J.. Chinese Academy of Sciences; República de China
Materia
Close binaries
Eclipsing binaries
NY VIR (estrella)
Subdwarfs
Planetary systems
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:11336/42477
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/42477
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY VirQian, S.-B.Zhu, L.-Y.Dai, Z.-B.Fernandez Lajus, Eduardo EusebioXiang, F.-Y.He, J.-J.Close binariesEclipsing binariesNY VIR (estrella)SubdwarfsPlanetary systemshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report here the tentative discovery of a Jovian planet in orbit around<br />the rapidly pulsating subdwarf B-type (sdB-type) eclipsing binary NY Vir. By using new determined eclipse times together those collected from the literature, we detect that the observed-calculated (O-C) curve of NY Vir shows a small-amplitude cyclic variation with a period of 7.9 years and a semiamplitude of 6.1 s, while it undergoes a downward parabolic change (revealing a period decrease at a rate of _dP/dt = -9.2 x 10^-12). The periodic variation was analyzed for the light-travel time effect via the presence of a third body. The mass of the tertiary companion was determined to be M3 sin i´ = 2.3(+/-0.3) MJupiter when a total mass of 0.60 Msun for NY Vir is adopted. This suggests that it most probably is a giant circumbinary planet orbiting NY Vir at a distance of about 3.3 astronomical units (AU). Since the rate of period decrease can not be explained by true angular momentum loss caused by gravitational radiation or/and magnetic braking, the observed downward parabolic change in the O-C diagram may be only a part of a long-period (longer than 15 years) cyclic variation, which may reveal the presence of another Jovian planet (about 2.5 MJupiter) in the system.Fil: Qian, S.-B.. Chinese Academy of Sciences; República de ChinaFil: Zhu, L.-Y.. Chinese Academy of Sciences; República de ChinaFil: Dai, Z.-B.. Chinese Academy of Sciences; República de ChinaFil: Fernandez Lajus, Eduardo Eusebio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. 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: Xiang, F.-Y.. Xiangtan University; ChinaFil: He, J.-J.. Chinese Academy of Sciences; República de ChinaIOP Publishing2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/42477Qian, S.-B.; Zhu, L.-Y.; Dai, Z.-B.; Fernandez Lajus, Eduardo Eusebio; Xiang, F.-Y.; et al.; Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir; IOP Publishing; The Astrophysical Journal Letters; 745; 2; 2-2012; 1-52041-8205CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/745/2/L23info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/745/2/L23/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 Técnicas2025-09-29T09:59:54Zoai:ri.conicet.gov.ar:11336/42477instacron: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 09:59:55.268CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
title Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
spellingShingle Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
Qian, S.-B.
Close binaries
Eclipsing binaries
NY VIR (estrella)
Subdwarfs
Planetary systems
title_short Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
title_full Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
title_fullStr Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
title_full_unstemmed Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
title_sort Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir
dc.creator.none.fl_str_mv Qian, S.-B.
Zhu, L.-Y.
Dai, Z.-B.
Fernandez Lajus, Eduardo Eusebio
Xiang, F.-Y.
He, J.-J.
author Qian, S.-B.
author_facet Qian, S.-B.
Zhu, L.-Y.
Dai, Z.-B.
Fernandez Lajus, Eduardo Eusebio
Xiang, F.-Y.
He, J.-J.
author_role author
author2 Zhu, L.-Y.
Dai, Z.-B.
Fernandez Lajus, Eduardo Eusebio
Xiang, F.-Y.
He, J.-J.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Close binaries
Eclipsing binaries
NY VIR (estrella)
Subdwarfs
Planetary systems
topic Close binaries
Eclipsing binaries
NY VIR (estrella)
Subdwarfs
Planetary systems
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report here the tentative discovery of a Jovian planet in orbit around<br />the rapidly pulsating subdwarf B-type (sdB-type) eclipsing binary NY Vir. By using new determined eclipse times together those collected from the literature, we detect that the observed-calculated (O-C) curve of NY Vir shows a small-amplitude cyclic variation with a period of 7.9 years and a semiamplitude of 6.1 s, while it undergoes a downward parabolic change (revealing a period decrease at a rate of _dP/dt = -9.2 x 10^-12). The periodic variation was analyzed for the light-travel time effect via the presence of a third body. The mass of the tertiary companion was determined to be M3 sin i´ = 2.3(+/-0.3) MJupiter when a total mass of 0.60 Msun for NY Vir is adopted. This suggests that it most probably is a giant circumbinary planet orbiting NY Vir at a distance of about 3.3 astronomical units (AU). Since the rate of period decrease can not be explained by true angular momentum loss caused by gravitational radiation or/and magnetic braking, the observed downward parabolic change in the O-C diagram may be only a part of a long-period (longer than 15 years) cyclic variation, which may reveal the presence of another Jovian planet (about 2.5 MJupiter) in the system.
Fil: Qian, S.-B.. Chinese Academy of Sciences; República de China
Fil: Zhu, L.-Y.. Chinese Academy of Sciences; República de China
Fil: Dai, Z.-B.. Chinese Academy of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. 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: Xiang, F.-Y.. Xiangtan University; China
Fil: He, J.-J.. Chinese Academy of Sciences; República de China
description We report here the tentative discovery of a Jovian planet in orbit around<br />the rapidly pulsating subdwarf B-type (sdB-type) eclipsing binary NY Vir. By using new determined eclipse times together those collected from the literature, we detect that the observed-calculated (O-C) curve of NY Vir shows a small-amplitude cyclic variation with a period of 7.9 years and a semiamplitude of 6.1 s, while it undergoes a downward parabolic change (revealing a period decrease at a rate of _dP/dt = -9.2 x 10^-12). The periodic variation was analyzed for the light-travel time effect via the presence of a third body. The mass of the tertiary companion was determined to be M3 sin i´ = 2.3(+/-0.3) MJupiter when a total mass of 0.60 Msun for NY Vir is adopted. This suggests that it most probably is a giant circumbinary planet orbiting NY Vir at a distance of about 3.3 astronomical units (AU). Since the rate of period decrease can not be explained by true angular momentum loss caused by gravitational radiation or/and magnetic braking, the observed downward parabolic change in the O-C diagram may be only a part of a long-period (longer than 15 years) cyclic variation, which may reveal the presence of another Jovian planet (about 2.5 MJupiter) in the system.
publishDate 2012
dc.date.none.fl_str_mv 2012-02
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/11336/42477
Qian, S.-B.; Zhu, L.-Y.; Dai, Z.-B.; Fernandez Lajus, Eduardo Eusebio; Xiang, F.-Y.; et al.; Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir; IOP Publishing; The Astrophysical Journal Letters; 745; 2; 2-2012; 1-5
2041-8205
CONICET Digital
CONICET
url http://hdl.handle.net/11336/42477
identifier_str_mv Qian, S.-B.; Zhu, L.-Y.; Dai, Z.-B.; Fernandez Lajus, Eduardo Eusebio; Xiang, F.-Y.; et al.; Circumbinary planets orbiting the rapidly pulsating subdwarf B-type binary NY Vir; IOP Publishing; The Astrophysical Journal Letters; 745; 2; 2-2012; 1-5
2041-8205
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/745/2/L23
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/745/2/L23/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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