HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary

Autores
Gonzalez, Jorge Federico; Hubrig, S.; Järvinen, S. P.; Schöller, M.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
HD149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with Prot = 25.4 d. The CFHT/ESPaDOnS archive spectra revealed Porb = 11.5192 ± 0.0005 d indicating strong subsynchronous rotation of the primary component. Such a strong subsynchronous rotation was not detected in any other SB2 system with a magnetic chemically peculiar component. Our inspection of the spectra revealed the presence of resolved Zeeman split spectral lines allowing us to determine the variability of the mean magnetic field modulus over the rotation period. The maximum of the magnetic field modulus coincides roughly with the positive extremum of the longitudinal field, whereas the minimum of the modulus with the negative extremum of the longitudinal field. No evidence for a longitudinal magnetic field was seen in the circularly polarized spectra of the secondary component. Using archival data from the ASAS3 survey, we find in the frequency spectrum only one significant peak, corresponding to the period Pphot = 25.390 ± 0.014 d. This value is in good agreements with the previous determination of the rotation period, Prot =25.380±0.007 d, which was based on longitudinal magnetic field measurements.
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: Hubrig, S.. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Järvinen, S. P.. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Schöller, M.. European Southern Observatory; Alemania
Materia
BINARIES: SPECTROSCOPIC
STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD149277
STARS: MAGNETIC FIELD
STARS: MASSIVE
STARS: ROTATION
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:11336/127496
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/127496
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primaryGonzalez, Jorge FedericoHubrig, S.Järvinen, S. P.Schöller, M.BINARIES: SPECTROSCOPICSTARS: CHEMICALLY PECULIARSTARS: INDIVIDUAL: HD149277STARS: MAGNETIC FIELDSTARS: MASSIVESTARS: ROTATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1HD149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with Prot = 25.4 d. The CFHT/ESPaDOnS archive spectra revealed Porb = 11.5192 ± 0.0005 d indicating strong subsynchronous rotation of the primary component. Such a strong subsynchronous rotation was not detected in any other SB2 system with a magnetic chemically peculiar component. Our inspection of the spectra revealed the presence of resolved Zeeman split spectral lines allowing us to determine the variability of the mean magnetic field modulus over the rotation period. The maximum of the magnetic field modulus coincides roughly with the positive extremum of the longitudinal field, whereas the minimum of the modulus with the negative extremum of the longitudinal field. No evidence for a longitudinal magnetic field was seen in the circularly polarized spectra of the secondary component. Using archival data from the ASAS3 survey, we find in the frequency spectrum only one significant peak, corresponding to the period Pphot = 25.390 ± 0.014 d. This value is in good agreements with the previous determination of the rotation period, Prot =25.380±0.007 d, which was based on longitudinal magnetic field measurements.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; ArgentinaFil: Hubrig, S.. Leibniz Institute For Astrophysics Potsdam; AlemaniaFil: Järvinen, S. P.. Leibniz Institute For Astrophysics Potsdam; AlemaniaFil: Schöller, M.. European Southern Observatory; AlemaniaOxford University Press2018-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/127496Gonzalez, Jorge Federico; Hubrig, S.; Järvinen, S. P.; Schöller, M.; HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary; Oxford University Press; Monthly Notices of the Royal Astronomical Society: Letters; 481; 1; 11-2018; 30-341745-3925CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/sly151info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article-abstract/481/1/L30/5075203info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1808.04335info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:24:10Zoai:ri.conicet.gov.ar:11336/127496instacron: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:34982025-10-15 14:24:10.724CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
title HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
spellingShingle HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
Gonzalez, Jorge Federico
BINARIES: SPECTROSCOPIC
STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD149277
STARS: MAGNETIC FIELD
STARS: MASSIVE
STARS: ROTATION
title_short HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
title_full HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
title_fullStr HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
title_full_unstemmed HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
title_sort HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
dc.creator.none.fl_str_mv Gonzalez, Jorge Federico
Hubrig, S.
Järvinen, S. P.
Schöller, M.
author Gonzalez, Jorge Federico
author_facet Gonzalez, Jorge Federico
Hubrig, S.
Järvinen, S. P.
Schöller, M.
author_role author
author2 Hubrig, S.
Järvinen, S. P.
Schöller, M.
author2_role author
author
author
dc.subject.none.fl_str_mv BINARIES: SPECTROSCOPIC
STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD149277
STARS: MAGNETIC FIELD
STARS: MASSIVE
STARS: ROTATION
topic BINARIES: SPECTROSCOPIC
STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD149277
STARS: MAGNETIC FIELD
STARS: MASSIVE
STARS: ROTATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv HD149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with Prot = 25.4 d. The CFHT/ESPaDOnS archive spectra revealed Porb = 11.5192 ± 0.0005 d indicating strong subsynchronous rotation of the primary component. Such a strong subsynchronous rotation was not detected in any other SB2 system with a magnetic chemically peculiar component. Our inspection of the spectra revealed the presence of resolved Zeeman split spectral lines allowing us to determine the variability of the mean magnetic field modulus over the rotation period. The maximum of the magnetic field modulus coincides roughly with the positive extremum of the longitudinal field, whereas the minimum of the modulus with the negative extremum of the longitudinal field. No evidence for a longitudinal magnetic field was seen in the circularly polarized spectra of the secondary component. Using archival data from the ASAS3 survey, we find in the frequency spectrum only one significant peak, corresponding to the period Pphot = 25.390 ± 0.014 d. This value is in good agreements with the previous determination of the rotation period, Prot =25.380±0.007 d, which was based on longitudinal magnetic field measurements.
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: Hubrig, S.. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Järvinen, S. P.. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Schöller, M.. European Southern Observatory; Alemania
description HD149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with Prot = 25.4 d. The CFHT/ESPaDOnS archive spectra revealed Porb = 11.5192 ± 0.0005 d indicating strong subsynchronous rotation of the primary component. Such a strong subsynchronous rotation was not detected in any other SB2 system with a magnetic chemically peculiar component. Our inspection of the spectra revealed the presence of resolved Zeeman split spectral lines allowing us to determine the variability of the mean magnetic field modulus over the rotation period. The maximum of the magnetic field modulus coincides roughly with the positive extremum of the longitudinal field, whereas the minimum of the modulus with the negative extremum of the longitudinal field. No evidence for a longitudinal magnetic field was seen in the circularly polarized spectra of the secondary component. Using archival data from the ASAS3 survey, we find in the frequency spectrum only one significant peak, corresponding to the period Pphot = 25.390 ± 0.014 d. This value is in good agreements with the previous determination of the rotation period, Prot =25.380±0.007 d, which was based on longitudinal magnetic field measurements.
publishDate 2018
dc.date.none.fl_str_mv 2018-11
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/11336/127496
Gonzalez, Jorge Federico; Hubrig, S.; Järvinen, S. P.; Schöller, M.; HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary; Oxford University Press; Monthly Notices of the Royal Astronomical Society: Letters; 481; 1; 11-2018; 30-34
1745-3925
CONICET Digital
CONICET
url http://hdl.handle.net/11336/127496
identifier_str_mv Gonzalez, Jorge Federico; Hubrig, S.; Järvinen, S. P.; Schöller, M.; HD149277: A rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary; Oxford University Press; Monthly Notices of the Royal Astronomical Society: Letters; 481; 1; 11-2018; 30-34
1745-3925
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/sly151
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article-abstract/481/1/L30/5075203
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1808.04335
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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_ 1846082660596711424
score 13.22299

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