Search for HI bubbles around WR stars: HD 50896
Based on observations of HI 21 cm line emission we have detected a neutral gas bubble surrounding the WR star HD 50896 and its optical ring nebula S 308. The observations were carried out with the 30 m dish antenna of IAR. We have studied the HI gas distribution in the region 233°≤ l ≤237°, -12°≤ b...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo Comunicacion |
| Lenguaje: | Español |
| Publicado: |
1990
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/143168 |
| Aporte de: |
| Sumario: | Based on observations of HI 21 cm line emission we have detected a neutral gas bubble surrounding the WR star HD 50896 and its optical ring nebula S 308. The observations were carried out with the 30 m dish antenna of IAR. We have studied the HI gas distribution in the region 233°≤ l ≤237°, -12°≤ b ≤ -9°, within the velocity range (-70, +140) km/s with a resolution of 2 km/s. The HI bubble that we have found has its maximum extension at the velocity of +8 km/s, indicating a kinematical distance of 1 kpc, which is similar to the optical distance of the open cluster CR 121. At this distance, the dimensions of the bubble are 25 x 35 pc. Our neutral gas observation suggest that HD 50896 belongs to Cr 121 and has Mᵥ=-3.3. |
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