A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell
- Autores
- Testori, Juan Carlos; Arnal, Edmundo Marcelo; Morras, Ricardo; Bajaja, Esteban; Pöppel, Wolfgang G. L.; Reich, P.
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Aims. We look for radio-continuum and atomic neutral hydrogen (Hi) counterparts of the IRAS Vela shell (IVS). Methods. Neutral hydrogen (Hi) and 1410 MHz radio continuum surveys carried out with the Instituto Argentino de Radioastronomía (IAR) dishes are the main databases used in this investigation. Results. A good morphological correlation was found between arc-shaped structures at radio wavelengths and in the 100 μm IR emission. This correlation is observed at velocities of the Hi between -17.5 and -2.1 km s-1, in agreement with the velocities of the molecular gas detected in the region. The radial distribution of the different components is consistent with the presence of an expanding shell that is being ionized from inside. Assuming a distance of 400 pc, the amount of ionized and atomic gas associated with the IVS is 2.3 × 104 and 6.8 × 104 solar masses, respectively. The origin of the expansion of the IVS could not be identified.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía - Materia
-
Ciencias Astronómicas
Galaxy: kinematics and dynamics
ISM: clouds
Radio lines: ISM - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83048
Ver los metadatos del registro completo
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A radio continuum and neutral hydrogen counterpart to the IRAS Vela shellTestori, Juan CarlosArnal, Edmundo MarceloMorras, RicardoBajaja, EstebanPöppel, Wolfgang G. L.Reich, P.Ciencias AstronómicasGalaxy: kinematics and dynamicsISM: cloudsRadio lines: ISMAims. We look for radio-continuum and atomic neutral hydrogen (Hi) counterparts of the IRAS Vela shell (IVS). Methods. Neutral hydrogen (Hi) and 1410 MHz radio continuum surveys carried out with the Instituto Argentino de Radioastronomía (IAR) dishes are the main databases used in this investigation. Results. A good morphological correlation was found between arc-shaped structures at radio wavelengths and in the 100 μm IR emission. This correlation is observed at velocities of the Hi between -17.5 and -2.1 km s<SUP>-1</SUP>, in agreement with the velocities of the molecular gas detected in the region. The radial distribution of the different components is consistent with the presence of an expanding shell that is being ionized from inside. Assuming a distance of 400 pc, the amount of ionized and atomic gas associated with the IVS is 2.3 × 10<SUP>4</SUP> and 6.8 × 10<SUP>4</SUP> solar masses, respectively. The origin of the expansion of the IVS could not be identified.Facultad de Ciencias Astronómicas y GeofísicasInstituto Argentino de Radioastronomía2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf163-171http://sedici.unlp.edu.ar/handle/10915/83048enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20052676info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:45Zoai:sedici.unlp.edu.ar:10915/83048Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:46.015SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| title |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| spellingShingle |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell Testori, Juan Carlos Ciencias Astronómicas Galaxy: kinematics and dynamics ISM: clouds Radio lines: ISM |
| title_short |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| title_full |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| title_fullStr |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| title_full_unstemmed |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| title_sort |
A radio continuum and neutral hydrogen counterpart to the IRAS Vela shell |
| dc.creator.none.fl_str_mv |
Testori, Juan Carlos Arnal, Edmundo Marcelo Morras, Ricardo Bajaja, Esteban Pöppel, Wolfgang G. L. Reich, P. |
| author |
Testori, Juan Carlos |
| author_facet |
Testori, Juan Carlos Arnal, Edmundo Marcelo Morras, Ricardo Bajaja, Esteban Pöppel, Wolfgang G. L. Reich, P. |
| author_role |
author |
| author2 |
Arnal, Edmundo Marcelo Morras, Ricardo Bajaja, Esteban Pöppel, Wolfgang G. L. Reich, P. |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Galaxy: kinematics and dynamics ISM: clouds Radio lines: ISM |
| topic |
Ciencias Astronómicas Galaxy: kinematics and dynamics ISM: clouds Radio lines: ISM |
| dc.description.none.fl_txt_mv |
Aims. We look for radio-continuum and atomic neutral hydrogen (Hi) counterparts of the IRAS Vela shell (IVS). Methods. Neutral hydrogen (Hi) and 1410 MHz radio continuum surveys carried out with the Instituto Argentino de Radioastronomía (IAR) dishes are the main databases used in this investigation. Results. A good morphological correlation was found between arc-shaped structures at radio wavelengths and in the 100 μm IR emission. This correlation is observed at velocities of the Hi between -17.5 and -2.1 km s<SUP>-1</SUP>, in agreement with the velocities of the molecular gas detected in the region. The radial distribution of the different components is consistent with the presence of an expanding shell that is being ionized from inside. Assuming a distance of 400 pc, the amount of ionized and atomic gas associated with the IVS is 2.3 × 10<SUP>4</SUP> and 6.8 × 10<SUP>4</SUP> solar masses, respectively. The origin of the expansion of the IVS could not be identified. Facultad de Ciencias Astronómicas y Geofísicas Instituto Argentino de Radioastronomía |
| description |
Aims. We look for radio-continuum and atomic neutral hydrogen (Hi) counterparts of the IRAS Vela shell (IVS). Methods. Neutral hydrogen (Hi) and 1410 MHz radio continuum surveys carried out with the Instituto Argentino de Radioastronomía (IAR) dishes are the main databases used in this investigation. Results. A good morphological correlation was found between arc-shaped structures at radio wavelengths and in the 100 μm IR emission. This correlation is observed at velocities of the Hi between -17.5 and -2.1 km s<SUP>-1</SUP>, in agreement with the velocities of the molecular gas detected in the region. The radial distribution of the different components is consistent with the presence of an expanding shell that is being ionized from inside. Assuming a distance of 400 pc, the amount of ionized and atomic gas associated with the IVS is 2.3 × 10<SUP>4</SUP> and 6.8 × 10<SUP>4</SUP> solar masses, respectively. The origin of the expansion of the IVS could not be identified. |
| publishDate |
2006 |
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2006 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/83048 |
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eng |
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