A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406
field of 2 square degrees centered in the position of HD 197406 (a spectroscopic binary composed by a WN7 star + compact companion), has been surveyed in the HI 21 cm line and in the 1420 and 408 MHz radio-continuum, using the synthesis radio-telescope of the Dominion Radio Astrophysical Observatory...
Guardado en:
| Autores principales: | , , |
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| Formato: | Articulo Comunicacion |
| Lenguaje: | Español |
| Publicado: |
1987
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/138955 |
| Aporte de: |
| id |
I19-R120-10915-138955 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Astronomía Galaxias |
| spellingShingle |
Astronomía Galaxias Dubner, G. Niemelä, Virpi Sinikka Purton, C. A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| topic_facet |
Astronomía Galaxias |
| description |
field of 2 square degrees centered in the position of HD 197406 (a spectroscopic binary composed by a WN7 star + compact companion), has been surveyed in the HI 21 cm line and in the 1420 and 408 MHz radio-continuum, using the synthesis radio-telescope of the Dominion Radio Astrophysical Observatory (Canadá). The spectral maps show the existence of a nearly complete ring-shaped HI shell (R₅≃30 pc, vₑₓₚ≃ 5 km/s, Mₕᵢ≃ 600 M⊙), and, immersed within this shell, a small spherical bubble concentric with the star (R_b≃=3 pc, vₑₓₚ≃ 4 km/s, Mₕᵢ (missing)≃3 M⊙). From these observations, a kinematical distance of 5 kpc is derived for HD 197406. We did not find thermal or non-thermal radio-sources associated with the binary system. Our observations suggest that the large shell has been created during previous evolutive stages of the binary, while the small bubble has been recently blown by the WR wind. |
| format |
Articulo Comunicacion |
| author |
Dubner, G. Niemelä, Virpi Sinikka Purton, C. |
| author_facet |
Dubner, G. Niemelä, Virpi Sinikka Purton, C. |
| author_sort |
Dubner, G. |
| title |
A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| title_short |
A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| title_full |
A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| title_fullStr |
A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| title_full_unstemmed |
A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 |
| title_sort |
stellar wind blown bubble associated with the wolf-rayet star hd 197406 |
| publishDate |
1987 |
| url |
http://sedici.unlp.edu.ar/handle/10915/138955 |
| work_keys_str_mv |
AT dubnerg astellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 AT niemelavirpisinikka astellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 AT purtonc astellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 AT dubnerg stellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 AT niemelavirpisinikka stellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 AT purtonc stellarwindblownbubbleassociatedwiththewolfrayetstarhd197406 |
| bdutipo_str |
Repositorios |
| _version_ |
1764820458185687042 |