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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/29927
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T09:38:45Zoai: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:34982025-09-29 09:38:46.222CONICET 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 |
_version_ |
1844613225490939904 |
score |
13.070432 |