An orbital period analysis of the dwarf novae OY Carinae

Autores
Han, Z. T.; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Liao, W. P.; Zhang, J.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
By using our twelve new CCD times of light minimum of OY Carinae (OY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.0 yr. The period decrease is opposite to the hypothesis of mass transfer, and it cannot be explained by angular momentum loss via gravitational radiation. The Rappaport et al. (1983)’s magnetic braking (MB) prescription is adopted to explain the observed orbital period decrease. The cyclic change of period is analyzed with the light travel-time effect that originates from gravitational influence of a third body. The mass of the third star is determined to be M3sini‧=0.008097(±0.000014) M⊙=8.48(±0.02) MJup, suggesting that it may be a critical substellar object between brown dwarf and giant planet. If the orbital inclination of the third body equals 90°, the distance between the third body and the mass centre of the whole system is about 6.18(±0.45) AU.
Fil: Han, Z. T. . Chinese Academy Of Sciences; República de China
Fil: Qian, S. B.. 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: Liao, W. P.. Chinese Academy Of Sciences; República de China
Fil: Zhang, J.. Chinese Academy Of Sciences; República de China
Materia
Eclipsing Binaries
Oy Carinae (Estrella)
Dwarf Novae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10735
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling An orbital period analysis of the dwarf novae OY CarinaeHan, Z. T. Qian, S. B.Fernandez Lajus, Eduardo EusebioLiao, W. P.Zhang, J.Eclipsing BinariesOy Carinae (Estrella)Dwarf Novaehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1By using our twelve new CCD times of light minimum of OY Carinae (OY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.0 yr. The period decrease is opposite to the hypothesis of mass transfer, and it cannot be explained by angular momentum loss via gravitational radiation. The Rappaport et al. (1983)’s magnetic braking (MB) prescription is adopted to explain the observed orbital period decrease. The cyclic change of period is analyzed with the light travel-time effect that originates from gravitational influence of a third body. The mass of the third star is determined to be M3sini‧=0.008097(±0.000014) M⊙=8.48(±0.02) MJup, suggesting that it may be a critical substellar object between brown dwarf and giant planet. If the orbital inclination of the third body equals 90°, the distance between the third body and the mass centre of the whole system is about 6.18(±0.45) AU.Fil: Han, Z. T. . Chinese Academy Of Sciences; República de ChinaFil: Qian, S. B.. 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: Liao, W. P.. Chinese Academy Of Sciences; República de ChinaFil: Zhang, J.. Chinese Academy Of Sciences; República de ChinaElsevier Science2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10735Han, Z. T. ; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Liao, W. P.; Zhang, J.; An orbital period analysis of the dwarf novae OY Carinae; Elsevier Science; New Astronomy; 34; 1-2015; 1-51384-1076enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2014.04.011info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1384107614000645info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:22Zoai:ri.conicet.gov.ar:11336/10735instacron: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 09:45:22.918CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An orbital period analysis of the dwarf novae OY Carinae
title An orbital period analysis of the dwarf novae OY Carinae
spellingShingle An orbital period analysis of the dwarf novae OY Carinae
Han, Z. T.
Eclipsing Binaries
Oy Carinae (Estrella)
Dwarf Novae
title_short An orbital period analysis of the dwarf novae OY Carinae
title_full An orbital period analysis of the dwarf novae OY Carinae
title_fullStr An orbital period analysis of the dwarf novae OY Carinae
title_full_unstemmed An orbital period analysis of the dwarf novae OY Carinae
title_sort An orbital period analysis of the dwarf novae OY Carinae
dc.creator.none.fl_str_mv Han, Z. T.
Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Liao, W. P.
Zhang, J.
author Han, Z. T.
author_facet Han, Z. T.
Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Liao, W. P.
Zhang, J.
author_role author
author2 Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Liao, W. P.
Zhang, J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Eclipsing Binaries
Oy Carinae (Estrella)
Dwarf Novae
topic Eclipsing Binaries
Oy Carinae (Estrella)
Dwarf Novae
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv By using our twelve new CCD times of light minimum of OY Carinae (OY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.0 yr. The period decrease is opposite to the hypothesis of mass transfer, and it cannot be explained by angular momentum loss via gravitational radiation. The Rappaport et al. (1983)’s magnetic braking (MB) prescription is adopted to explain the observed orbital period decrease. The cyclic change of period is analyzed with the light travel-time effect that originates from gravitational influence of a third body. The mass of the third star is determined to be M3sini‧=0.008097(±0.000014) M⊙=8.48(±0.02) MJup, suggesting that it may be a critical substellar object between brown dwarf and giant planet. If the orbital inclination of the third body equals 90°, the distance between the third body and the mass centre of the whole system is about 6.18(±0.45) AU.
Fil: Han, Z. T. . Chinese Academy Of Sciences; República de China
Fil: Qian, S. B.. 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: Liao, W. P.. Chinese Academy Of Sciences; República de China
Fil: Zhang, J.. Chinese Academy Of Sciences; República de China
description By using our twelve new CCD times of light minimum of OY Carinae (OY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.0 yr. The period decrease is opposite to the hypothesis of mass transfer, and it cannot be explained by angular momentum loss via gravitational radiation. The Rappaport et al. (1983)’s magnetic braking (MB) prescription is adopted to explain the observed orbital period decrease. The cyclic change of period is analyzed with the light travel-time effect that originates from gravitational influence of a third body. The mass of the third star is determined to be M3sini‧=0.008097(±0.000014) M⊙=8.48(±0.02) MJup, suggesting that it may be a critical substellar object between brown dwarf and giant planet. If the orbital inclination of the third body equals 90°, the distance between the third body and the mass centre of the whole system is about 6.18(±0.45) AU.
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/11336/10735
Han, Z. T. ; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Liao, W. P.; Zhang, J.; An orbital period analysis of the dwarf novae OY Carinae; Elsevier Science; New Astronomy; 34; 1-2015; 1-5
1384-1076
url http://hdl.handle.net/11336/10735
identifier_str_mv Han, Z. T. ; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Liao, W. P.; Zhang, J.; An orbital period analysis of the dwarf novae OY Carinae; Elsevier Science; New Astronomy; 34; 1-2015; 1-5
1384-1076
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2014.04.011
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1384107614000645
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 13.13397

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