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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/127496
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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 Técnicas2025-09-29T09:35:37Zoai: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:34982025-09-29 09:35:38.158CONICET 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 |
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1844613111006363648 |
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13.070432 |