Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A

Autores
Ansín, Tomás; Gamen, Roberto Claudio; Morrell, Nidia Irene; Barba, Rodolfo Héctor; Maíz Apellániz, Jesús; Arias, J. I.; Simón Díaz, S.; Holgado, G.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The evolution of massive stars is not completely understood. Several phenomena affect their birth, life, and death, multiplicity being one of them. In this context, the OWN and MONOS projects are systematically observing O- and WN-type stars whose multiplicity status is unknown. Their major goal considers the necessity of determining absolute parameters of massive stars. We have collected spectra of HD 93249 A and ALS 12502 A aiming at characterizing their binary nature. For both stars, we analysed high-resolution spectra and combined them with Transiting Exoplanet Survey Satellite (TESS) observations to be compared with binary models constructed by means of the PHOEBE code. We discovered that the radial velocity of HD 93249 A varies with a period of 2.97968 ± 0.00001 d and that the system presents ellipsoidal light variations. We disentangled the composite spectra and classified its components as O9 III and B1.5 III, respectively. Confirmed as a spectroscopic binary, HD 93249 A can no longer be used as spectral classification standard. ALS 12502 A turned out to be a detached eclipsing binary in the TESS and Gaia data. These results enable us to determine absolute parameters for each component in the system.
Fil: Ansín, Tomás. 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: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Observatorio Las Campanas, Carnegie Institution; Chile
Fil: Barba, Rodolfo Héctor. Universidad de La Serena; Chile
Fil: Maíz Apellániz, Jesús. CSIC-inta. Centro de Astrobiología; España
Fil: Arias, J. I.. Universidad de La Serena; Chile
Fil: Simón Díaz, S.. Instituto de Astrofísica de Canarias; España
Fil: Holgado, G.. Instituto de Astrofísica de Canarias; España
Materia
binaries: spectroscopic
stars: early-type
stars: fundamental parameters
stars: individual: (HD 93249 A); (ALS 12502 A)
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:11336/235659
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 AAnsín, TomásGamen, Roberto ClaudioMorrell, Nidia IreneBarba, Rodolfo HéctorMaíz Apellániz, JesúsArias, J. I.Simón Díaz, S.Holgado, G.binaries: spectroscopicstars: early-typestars: fundamental parametersstars: individual: (HD 93249 A); (ALS 12502 A)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The evolution of massive stars is not completely understood. Several phenomena affect their birth, life, and death, multiplicity being one of them. In this context, the OWN and MONOS projects are systematically observing O- and WN-type stars whose multiplicity status is unknown. Their major goal considers the necessity of determining absolute parameters of massive stars. We have collected spectra of HD 93249 A and ALS 12502 A aiming at characterizing their binary nature. For both stars, we analysed high-resolution spectra and combined them with Transiting Exoplanet Survey Satellite (TESS) observations to be compared with binary models constructed by means of the PHOEBE code. We discovered that the radial velocity of HD 93249 A varies with a period of 2.97968 ± 0.00001 d and that the system presents ellipsoidal light variations. We disentangled the composite spectra and classified its components as O9 III and B1.5 III, respectively. Confirmed as a spectroscopic binary, HD 93249 A can no longer be used as spectral classification standard. ALS 12502 A turned out to be a detached eclipsing binary in the TESS and Gaia data. These results enable us to determine absolute parameters for each component in the system.Fil: Ansín, Tomás. 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: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Observatorio Las Campanas, Carnegie Institution; ChileFil: Barba, Rodolfo Héctor. Universidad de La Serena; ChileFil: Maíz Apellániz, Jesús. CSIC-inta. Centro de Astrobiología; EspañaFil: Arias, J. I.. Universidad de La Serena; ChileFil: Simón Díaz, S.. Instituto de Astrofísica de Canarias; EspañaFil: Holgado, G.. Instituto de Astrofísica de Canarias; EspañaWiley Blackwell Publishing, Inc2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/235659Ansín, Tomás; Gamen, Roberto Claudio; Morrell, Nidia Irene; Barba, Rodolfo Héctor; Maíz Apellániz, Jesús; et al.; Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 3; 11-2023; 4566-45800035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/525/3/4566/7257561info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad2501info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:56:10Zoai:ri.conicet.gov.ar:11336/235659instacron: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 09:56:10.619CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
title Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
spellingShingle Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
Ansín, Tomás
binaries: spectroscopic
stars: early-type
stars: fundamental parameters
stars: individual: (HD 93249 A); (ALS 12502 A)
title_short Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
title_full Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
title_fullStr Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
title_full_unstemmed Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
title_sort Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A
dc.creator.none.fl_str_mv Ansín, Tomás
Gamen, Roberto Claudio
Morrell, Nidia Irene
Barba, Rodolfo Héctor
Maíz Apellániz, Jesús
Arias, J. I.
Simón Díaz, S.
Holgado, G.
author Ansín, Tomás
author_facet Ansín, Tomás
Gamen, Roberto Claudio
Morrell, Nidia Irene
Barba, Rodolfo Héctor
Maíz Apellániz, Jesús
Arias, J. I.
Simón Díaz, S.
Holgado, G.
author_role author
author2 Gamen, Roberto Claudio
Morrell, Nidia Irene
Barba, Rodolfo Héctor
Maíz Apellániz, Jesús
Arias, J. I.
Simón Díaz, S.
Holgado, G.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv binaries: spectroscopic
stars: early-type
stars: fundamental parameters
stars: individual: (HD 93249 A); (ALS 12502 A)
topic binaries: spectroscopic
stars: early-type
stars: fundamental parameters
stars: individual: (HD 93249 A); (ALS 12502 A)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The evolution of massive stars is not completely understood. Several phenomena affect their birth, life, and death, multiplicity being one of them. In this context, the OWN and MONOS projects are systematically observing O- and WN-type stars whose multiplicity status is unknown. Their major goal considers the necessity of determining absolute parameters of massive stars. We have collected spectra of HD 93249 A and ALS 12502 A aiming at characterizing their binary nature. For both stars, we analysed high-resolution spectra and combined them with Transiting Exoplanet Survey Satellite (TESS) observations to be compared with binary models constructed by means of the PHOEBE code. We discovered that the radial velocity of HD 93249 A varies with a period of 2.97968 ± 0.00001 d and that the system presents ellipsoidal light variations. We disentangled the composite spectra and classified its components as O9 III and B1.5 III, respectively. Confirmed as a spectroscopic binary, HD 93249 A can no longer be used as spectral classification standard. ALS 12502 A turned out to be a detached eclipsing binary in the TESS and Gaia data. These results enable us to determine absolute parameters for each component in the system.
Fil: Ansín, Tomás. 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: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Observatorio Las Campanas, Carnegie Institution; Chile
Fil: Barba, Rodolfo Héctor. Universidad de La Serena; Chile
Fil: Maíz Apellániz, Jesús. CSIC-inta. Centro de Astrobiología; España
Fil: Arias, J. I.. Universidad de La Serena; Chile
Fil: Simón Díaz, S.. Instituto de Astrofísica de Canarias; España
Fil: Holgado, G.. Instituto de Astrofísica de Canarias; España
description The evolution of massive stars is not completely understood. Several phenomena affect their birth, life, and death, multiplicity being one of them. In this context, the OWN and MONOS projects are systematically observing O- and WN-type stars whose multiplicity status is unknown. Their major goal considers the necessity of determining absolute parameters of massive stars. We have collected spectra of HD 93249 A and ALS 12502 A aiming at characterizing their binary nature. For both stars, we analysed high-resolution spectra and combined them with Transiting Exoplanet Survey Satellite (TESS) observations to be compared with binary models constructed by means of the PHOEBE code. We discovered that the radial velocity of HD 93249 A varies with a period of 2.97968 ± 0.00001 d and that the system presents ellipsoidal light variations. We disentangled the composite spectra and classified its components as O9 III and B1.5 III, respectively. Confirmed as a spectroscopic binary, HD 93249 A can no longer be used as spectral classification standard. ALS 12502 A turned out to be a detached eclipsing binary in the TESS and Gaia data. These results enable us to determine absolute parameters for each component in the system.
publishDate 2023
dc.date.none.fl_str_mv 2023-11
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/11336/235659
Ansín, Tomás; Gamen, Roberto Claudio; Morrell, Nidia Irene; Barba, Rodolfo Héctor; Maíz Apellániz, Jesús; et al.; Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 3; 11-2023; 4566-4580
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/235659
identifier_str_mv Ansín, Tomás; Gamen, Roberto Claudio; Morrell, Nidia Irene; Barba, Rodolfo Héctor; Maíz Apellániz, Jesús; et al.; Fundamental parameters of two O9-type giant stars: the (former) spectral classification standard HD 93249 A and ALS 12502 A; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 3; 11-2023; 4566-4580
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/525/3/4566/7257561
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad2501
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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