An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155

Autores
Cichowolski, Silvina; Arnal, Edmundo Marcelo
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The neutral hydrogen distribution has been studied in the direction of three Galactic Wolf-Rayet (WR) stars using the 100 m Effelsberg radio telescope. Cavities in the HI distribution, regions of low HI emissivity, are observed over a 8–9 km s−1 velocity range for WR 126 (≡ST 2), WR 154 (≡HD 213049) and WR 155 (≡HD 214419). These minima are interpreted as the observable 21-cm HI line counterpart of interstellar bubbles created by the winds of the WR stars and their progenitors. The HI cavities are elongated structures depicting an axial ratio ranging from 1.3 (WR 155) to 3 (WR 126). The WR stars are always eccentric with respect to either the geometric centre of the HI cavity or the absolute minimum inside it. This offset ranges from 50% to 80% of the HI hole’s minor axis. The major axis of these structures range from 13 (WR 155) to 27 pc (WR 126), while the missing HI mass amounts to 45–50 M (WR 126), 60 M (WR 155) and 85 M (WR 154).
Fil: Cichowolski, Silvina. 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: Arnal, Edmundo Marcelo. 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
Materia
Interstellar bubbles
Wolf Rayet stars
WR 126 (estrella)
WR 154 (estrella)
WR 155 (estrella)
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:11336/29927
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/29927
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155Cichowolski, SilvinaArnal, Edmundo MarceloInterstellar bubblesWolf Rayet starsWR 126 (estrella)WR 154 (estrella)WR 155 (estrella)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The neutral hydrogen distribution has been studied in the direction of three Galactic Wolf-Rayet (WR) stars using the 100 m Effelsberg radio telescope. Cavities in the HI distribution, regions of low HI emissivity, are observed over a 8–9 km s−1 velocity range for WR 126 (≡ST 2), WR 154 (≡HD 213049) and WR 155 (≡HD 214419). These minima are interpreted as the observable 21-cm HI line counterpart of interstellar bubbles created by the winds of the WR stars and their progenitors. The HI cavities are elongated structures depicting an axial ratio ranging from 1.3 (WR 155) to 3 (WR 126). The WR stars are always eccentric with respect to either the geometric centre of the HI cavity or the absolute minimum inside it. This offset ranges from 50% to 80% of the HI hole’s minor axis. The major axis of these structures range from 13 (WR 155) to 27 pc (WR 126), while the missing HI mass amounts to 45–50 M (WR 126), 60 M (WR 155) and 85 M (WR 154).Fil: Cichowolski, Silvina. 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: Arnal, Edmundo Marcelo. 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; ArgentinaEDP Sciences2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/29927Cichowolski, Silvina; Arnal, Edmundo Marcelo; An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155; EDP Sciences; Astronomy and Astrophysics; 414; 12-2004; 203-2090004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20031620info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2004/04/aa3910/aa3910.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:58Zoai:ri.conicet.gov.ar:11336/29927instacron: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 14:27:59.006CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
title An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
spellingShingle An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
Cichowolski, Silvina
Interstellar bubbles
Wolf Rayet stars
WR 126 (estrella)
WR 154 (estrella)
WR 155 (estrella)
title_short An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
title_full An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
title_fullStr An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
title_full_unstemmed An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
title_sort An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155
dc.creator.none.fl_str_mv Cichowolski, Silvina
Arnal, Edmundo Marcelo
author Cichowolski, Silvina
author_facet Cichowolski, Silvina
Arnal, Edmundo Marcelo
author_role author
author2 Arnal, Edmundo Marcelo
author2_role author
dc.subject.none.fl_str_mv Interstellar bubbles
Wolf Rayet stars
WR 126 (estrella)
WR 154 (estrella)
WR 155 (estrella)
topic Interstellar bubbles
Wolf Rayet stars
WR 126 (estrella)
WR 154 (estrella)
WR 155 (estrella)
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 neutral hydrogen distribution has been studied in the direction of three Galactic Wolf-Rayet (WR) stars using the 100 m Effelsberg radio telescope. Cavities in the HI distribution, regions of low HI emissivity, are observed over a 8–9 km s−1 velocity range for WR 126 (≡ST 2), WR 154 (≡HD 213049) and WR 155 (≡HD 214419). These minima are interpreted as the observable 21-cm HI line counterpart of interstellar bubbles created by the winds of the WR stars and their progenitors. The HI cavities are elongated structures depicting an axial ratio ranging from 1.3 (WR 155) to 3 (WR 126). The WR stars are always eccentric with respect to either the geometric centre of the HI cavity or the absolute minimum inside it. This offset ranges from 50% to 80% of the HI hole’s minor axis. The major axis of these structures range from 13 (WR 155) to 27 pc (WR 126), while the missing HI mass amounts to 45–50 M (WR 126), 60 M (WR 155) and 85 M (WR 154).
Fil: Cichowolski, Silvina. 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: Arnal, Edmundo Marcelo. 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
description The neutral hydrogen distribution has been studied in the direction of three Galactic Wolf-Rayet (WR) stars using the 100 m Effelsberg radio telescope. Cavities in the HI distribution, regions of low HI emissivity, are observed over a 8–9 km s−1 velocity range for WR 126 (≡ST 2), WR 154 (≡HD 213049) and WR 155 (≡HD 214419). These minima are interpreted as the observable 21-cm HI line counterpart of interstellar bubbles created by the winds of the WR stars and their progenitors. The HI cavities are elongated structures depicting an axial ratio ranging from 1.3 (WR 155) to 3 (WR 126). The WR stars are always eccentric with respect to either the geometric centre of the HI cavity or the absolute minimum inside it. This offset ranges from 50% to 80% of the HI hole’s minor axis. The major axis of these structures range from 13 (WR 155) to 27 pc (WR 126), while the missing HI mass amounts to 45–50 M (WR 126), 60 M (WR 155) and 85 M (WR 154).
publishDate 2004
dc.date.none.fl_str_mv 2004-12
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/11336/29927
Cichowolski, Silvina; Arnal, Edmundo Marcelo; An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155; EDP Sciences; Astronomy and Astrophysics; 414; 12-2004; 203-209
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/29927
identifier_str_mv Cichowolski, Silvina; Arnal, Edmundo Marcelo; An Effelsberg HI study of the ISM around WR 126, WR 154 and WR 155; EDP Sciences; Astronomy and Astrophysics; 414; 12-2004; 203-209
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20031620
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2004/04/aa3910/aa3910.html
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
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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 13.22299

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