Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr

Autores
Tovmassian, G.; Gonzalez, Jorge Federico; Hernández, M. S.; González-Buitrago, D.; Zharikov, S.; Hernández Santisteban, J. V.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5 ± 2.0 km s-1), which, coupled with the constraints on the white dwarf mass from the X-ray spectroscopy, leads to the conclusion that the donor star barely fills 70% of its corresponding Roche lobe radius. It appears to be a slightly evolved K2-type star. This conclusion was further supported by a recently published distance to the binary system measured by the Gaia mission. At the same time, it becomes difficult to explain a very high (≤10-9 Ṁ yr 1) mass transfer and mass accretion rate in a detached binary via stellar wind and magnetic coupling.
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Hernández, M. S.. Universidad de Valparaiso; Chile
Fil: González-Buitrago, D.. University of California at Irvine; Estados Unidos
Fil: Zharikov, S.. Universidad Nacional Autónoma de México; México
Fil: Hernández Santisteban, J. V.. University of Amsterdam; Países Bajos
Materia
BINARIES: CLOSE
NOVAE, CATACLYSMIC VARIABLES
STAR: ROTATION
STARS: INDIVIDUAL (V1082 SGR)
STARS: WINDS, OUTFLOWS
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:11336/127494
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 SgrTovmassian, G.Gonzalez, Jorge FedericoHernández, M. S.González-Buitrago, D.Zharikov, S.Hernández Santisteban, J. V.BINARIES: CLOSENOVAE, CATACLYSMIC VARIABLESSTAR: ROTATIONSTARS: INDIVIDUAL (V1082 SGR)STARS: WINDS, OUTFLOWShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5 ± 2.0 km s-1), which, coupled with the constraints on the white dwarf mass from the X-ray spectroscopy, leads to the conclusion that the donor star barely fills 70% of its corresponding Roche lobe radius. It appears to be a slightly evolved K2-type star. This conclusion was further supported by a recently published distance to the binary system measured by the Gaia mission. At the same time, it becomes difficult to explain a very high (≤10-9 Ṁ yr 1) mass transfer and mass accretion rate in a detached binary via stellar wind and magnetic coupling.Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; MéxicoFil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Hernández, M. S.. Universidad de Valparaiso; ChileFil: González-Buitrago, D.. University of California at Irvine; Estados UnidosFil: Zharikov, S.. Universidad Nacional Autónoma de México; MéxicoFil: Hernández Santisteban, J. V.. University of Amsterdam; Países BajosIOP Publishing2018-12-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/127494Tovmassian, G.; Gonzalez, Jorge Federico; Hernández, M. S.; González-Buitrago, D.; Zharikov, S.; et al.; Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 869; 1; 7-12-2018; 1-100004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aaec02info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aaec02info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:22Zoai:ri.conicet.gov.ar:11336/127494instacron: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 09:48:23.329CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
title Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
spellingShingle Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
Tovmassian, G.
BINARIES: CLOSE
NOVAE, CATACLYSMIC VARIABLES
STAR: ROTATION
STARS: INDIVIDUAL (V1082 SGR)
STARS: WINDS, OUTFLOWS
title_short Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
title_full Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
title_fullStr Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
title_full_unstemmed Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
title_sort Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
dc.creator.none.fl_str_mv Tovmassian, G.
Gonzalez, Jorge Federico
Hernández, M. S.
González-Buitrago, D.
Zharikov, S.
Hernández Santisteban, J. V.
author Tovmassian, G.
author_facet Tovmassian, G.
Gonzalez, Jorge Federico
Hernández, M. S.
González-Buitrago, D.
Zharikov, S.
Hernández Santisteban, J. V.
author_role author
author2 Gonzalez, Jorge Federico
Hernández, M. S.
González-Buitrago, D.
Zharikov, S.
Hernández Santisteban, J. V.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv BINARIES: CLOSE
NOVAE, CATACLYSMIC VARIABLES
STAR: ROTATION
STARS: INDIVIDUAL (V1082 SGR)
STARS: WINDS, OUTFLOWS
topic BINARIES: CLOSE
NOVAE, CATACLYSMIC VARIABLES
STAR: ROTATION
STARS: INDIVIDUAL (V1082 SGR)
STARS: WINDS, OUTFLOWS
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 obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5 ± 2.0 km s-1), which, coupled with the constraints on the white dwarf mass from the X-ray spectroscopy, leads to the conclusion that the donor star barely fills 70% of its corresponding Roche lobe radius. It appears to be a slightly evolved K2-type star. This conclusion was further supported by a recently published distance to the binary system measured by the Gaia mission. At the same time, it becomes difficult to explain a very high (≤10-9 Ṁ yr 1) mass transfer and mass accretion rate in a detached binary via stellar wind and magnetic coupling.
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Hernández, M. S.. Universidad de Valparaiso; Chile
Fil: González-Buitrago, D.. University of California at Irvine; Estados Unidos
Fil: Zharikov, S.. Universidad Nacional Autónoma de México; México
Fil: Hernández Santisteban, J. V.. University of Amsterdam; Países Bajos
description We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5 ± 2.0 km s-1), which, coupled with the constraints on the white dwarf mass from the X-ray spectroscopy, leads to the conclusion that the donor star barely fills 70% of its corresponding Roche lobe radius. It appears to be a slightly evolved K2-type star. This conclusion was further supported by a recently published distance to the binary system measured by the Gaia mission. At the same time, it becomes difficult to explain a very high (≤10-9 Ṁ yr 1) mass transfer and mass accretion rate in a detached binary via stellar wind and magnetic coupling.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-07
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/11336/127494
Tovmassian, G.; Gonzalez, Jorge Federico; Hernández, M. S.; González-Buitrago, D.; Zharikov, S.; et al.; Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 869; 1; 7-12-2018; 1-10
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/127494
identifier_str_mv Tovmassian, G.; Gonzalez, Jorge Federico; Hernández, M. S.; González-Buitrago, D.; Zharikov, S.; et al.; Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 869; 1; 7-12-2018; 1-10
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aaec02
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aaec02
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
_version_ 1842268921091063808
score 13.13397

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