Artículo
The radio and infrared counterparts of the ring nebula around HD 211564
Fecha de publicación:
03/2010
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report the detection of the radio and infrared (IR) counterparts of the ring nebula around the WN3(h) star HD 211564 (WR 152), located to the south-west of the H II region Sh2 132. Using radio continuum data from the Canadian Galactic Plane Survey, we identified the radio counterparts of the two concentric rings, of about 9 and 16 arcmin in radius, related to the star. After applying a filling factor f = 0.05-0.12, electron densities and ionized masses are in the range 10-16 cm-3 and 450-700 M⊙ respectively. The analysis of the H I gas emission distribution allowed the identification of 5900 M⊙ of neutral atomic gas with velocities between -52 and -43 km s-1 probably linked to the nebula. The region of the nebula is almost free of molecular gas. Only four small clumps were detected, with a total molecular mass of 790 M⊙. About 310 M⊙ are related to a small IR shell-like source linked to the inner ring, which is also detected in the MSX band A.AnIRAS young stellar object candidate is detected in coincidence with the shell-like IR source. We suggest that the optical nebula and its neutral counterparts originated from the stellar winds from the Wolf-Rayet star and its massive progenitor, and are evolving in the envelope of a slowly expanding shell centred at (l,b) = (102{ring operator}.30, -0°.50) of about 31 pc in radius. The bubble's energy conversion efficiency is in agreement with recent numerical analysis and with observational results. © 2010 The Authors. Journal compilation. © 2010 RAS.
Palabras clave:
ISM: BUBBLES
,
STARS: INDIVIDUAL: HD 211564
,
STARS: WOLF-RAYET
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Identificadores
Colecciones
Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos(IAR)
Articulos de INST.ARG.DE RADIOASTRONOMIA (I)
Articulos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Cappa, Cristina Elisabeth; Vasquez, Javier; Pineault, Serge; Cichowolski, Silvina; The radio and infrared counterparts of the ring nebula around HD 211564; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 403; 1; 3-2010; 387-397
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