The ISM around WR 152 and WR 153ab

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We analyzed the distribution of the interstellar matter in the environs of the WR stars WR152 and WR153ab, associated with ring nebulae in the Sh2-132 Hii region. Our study is based on radio data (continuum, Hi, and CO(1-0) observations) and images in the far and mid IR. We have detected the radio c...

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Detalles Bibliográficos
Autores principales: Cappa, C.E., Vasquez, J., Arnal, E.M., Cichowolski, S., Pineault, S.
Formato: CONF
Materias:
ISM: ring nebulae
Stars: individual (WR152, WR153AB)
Stars: wolf-rayet
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14052059_v33_n_p142_Cappa
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We analyzed the distribution of the interstellar matter in the environs of the WR stars WR152 and WR153ab, associated with ring nebulae in the Sh2-132 Hii region. Our study is based on radio data (continuum, Hi, and CO(1-0) observations) and images in the far and mid IR. We have detected the radio continuum and far IR counterparts of the ionized shells related to WR152, as well as Hi gas linked to the outer ionized shell. The distributions of the ionized and molecular gas related to WR153ab and that of the PAHs suggest the presence of photodissociation regions at the interface between the ionized and molecular material. We estimate the main physical parameters of the gas components. © 2008: Instituto de Astronomía.

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