Radio behavior of four southern non-thermal O-type stars

Autores
Benaglia, Paula; Koribalski, Bärbel
Año de publicación
2007
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We have conducted high resolution continuum observations at 1.4 and 2.4 GHz  with the Australia Telescope Compact Array, towards the four southern Of stars: CD-47 4551, HD 93129A, HD 124314, and HD 150136. All stars have been detected at the two frequencies. HD 93129A - the only O2 I star catalogued so far, and in a double system -, has also been observed at 17.8 and 24.5 GHz. Its radio spectrum, complemented with previous observations at higher frequencies, is analyzed here. The interpretation yields the estimate of its mass loss rate, and a non-thermal spectral index of radiation coming from a putative colliding wind region. The synchrotron and corresponding inverse Compton luminosities are derived.
Fil: Benaglia, Paula. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Koribalski, Bärbel. Australia Telescope National Facility; Australia
Massive Stars in Interacting Binaries
Sacacomie
Canadá
Universite Laval
Materia
massive stars
non-thermal emission
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:11336/231506
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Radio behavior of four southern non-thermal O-type starsBenaglia, PaulaKoribalski, Bärbelmassive starsnon-thermal emissionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have conducted high resolution continuum observations at 1.4 and 2.4 GHz  with the Australia Telescope Compact Array, towards the four southern Of stars: CD-47 4551, HD 93129A, HD 124314, and HD 150136. All stars have been detected at the two frequencies. HD 93129A - the only O2 I star catalogued so far, and in a double system -, has also been observed at 17.8 and 24.5 GHz. Its radio spectrum, complemented with previous observations at higher frequencies, is analyzed here. The interpretation yields the estimate of its mass loss rate, and a non-thermal spectral index of radiation coming from a putative colliding wind region. The synchrotron and corresponding inverse Compton luminosities are derived.Fil: Benaglia, Paula. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Koribalski, Bärbel. Australia Telescope National Facility; AustraliaMassive Stars in Interacting BinariesSacacomieCanadáUniversite LavalAstronomical Society of the PacificSt.-Louis, NicoleMoffat, Anthony F. J.2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectWorkshopJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/231506Radio behavior of four southern non-thermal O-type stars; Massive Stars in Interacting Binaries; Sacacomie; Canadá; 2007; 179-1869781583812358CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aspbooks.org/a/volumes/article_details/?paper_id=4804info:eu-repo/semantics/altIdentifier/url/https://ui.adsabs.harvard.edu/abs/2007ASPC..367..179B/abstractInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:30:47Zoai:ri.conicet.gov.ar:11336/231506instacron: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:34982025-10-22 11:30:47.289CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Radio behavior of four southern non-thermal O-type stars
title Radio behavior of four southern non-thermal O-type stars
spellingShingle Radio behavior of four southern non-thermal O-type stars
Benaglia, Paula
massive stars
non-thermal emission
title_short Radio behavior of four southern non-thermal O-type stars
title_full Radio behavior of four southern non-thermal O-type stars
title_fullStr Radio behavior of four southern non-thermal O-type stars
title_full_unstemmed Radio behavior of four southern non-thermal O-type stars
title_sort Radio behavior of four southern non-thermal O-type stars
dc.creator.none.fl_str_mv Benaglia, Paula
Koribalski, Bärbel
author Benaglia, Paula
author_facet Benaglia, Paula
Koribalski, Bärbel
author_role author
author2 Koribalski, Bärbel
author2_role author
dc.contributor.none.fl_str_mv St.-Louis, Nicole
Moffat, Anthony F. J.
dc.subject.none.fl_str_mv massive stars
non-thermal emission
topic massive stars
non-thermal emission
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 have conducted high resolution continuum observations at 1.4 and 2.4 GHz  with the Australia Telescope Compact Array, towards the four southern Of stars: CD-47 4551, HD 93129A, HD 124314, and HD 150136. All stars have been detected at the two frequencies. HD 93129A - the only O2 I star catalogued so far, and in a double system -, has also been observed at 17.8 and 24.5 GHz. Its radio spectrum, complemented with previous observations at higher frequencies, is analyzed here. The interpretation yields the estimate of its mass loss rate, and a non-thermal spectral index of radiation coming from a putative colliding wind region. The synchrotron and corresponding inverse Compton luminosities are derived.
Fil: Benaglia, Paula. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Koribalski, Bärbel. Australia Telescope National Facility; Australia
Massive Stars in Interacting Binaries
Sacacomie
Canadá
Universite Laval
description We have conducted high resolution continuum observations at 1.4 and 2.4 GHz  with the Australia Telescope Compact Array, towards the four southern Of stars: CD-47 4551, HD 93129A, HD 124314, and HD 150136. All stars have been detected at the two frequencies. HD 93129A - the only O2 I star catalogued so far, and in a double system -, has also been observed at 17.8 and 24.5 GHz. Its radio spectrum, complemented with previous observations at higher frequencies, is analyzed here. The interpretation yields the estimate of its mass loss rate, and a non-thermal spectral index of radiation coming from a putative colliding wind region. The synchrotron and corresponding inverse Compton luminosities are derived.
publishDate 2007
dc.date.none.fl_str_mv 2007
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Workshop
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/231506
Radio behavior of four southern non-thermal O-type stars; Massive Stars in Interacting Binaries; Sacacomie; Canadá; 2007; 179-186
9781583812358
CONICET Digital
CONICET
url http://hdl.handle.net/11336/231506
identifier_str_mv Radio behavior of four southern non-thermal O-type stars; Massive Stars in Interacting Binaries; Sacacomie; Canadá; 2007; 179-186
9781583812358
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://www.aspbooks.org/a/volumes/article_details/?paper_id=4804
info:eu-repo/semantics/altIdentifier/url/https://ui.adsabs.harvard.edu/abs/2007ASPC..367..179B/abstract
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.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Astronomical Society of the Pacific
publisher.none.fl_str_mv Astronomical Society of the Pacific
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 12.982451

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