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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/231506
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T10:01:15Zoai: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:34982025-09-29 10:01:15.354CONICET 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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1844613803812061184 |
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13.070432 |