IRAS Observations of Nebulae Around Wolf-Rayet Stars

Details IRAS Observations of Nebulae Around Wolf-Rayet Stars IRAS Observations of Nebulae Around Wolf-Rayet Stars

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.4408m&link_type=abstract

American Astronomical Society, 187th AAS Meeting, #44.08; Bulletin of the American Astronomical Society, Vol. 27, p.1345

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present IRAS Skyflux and HIRES images of the environments of galactic Wolf-Rayet stars. These form part of a complete sample of all galactic Wolf-Rayet stars observed by IRAS, a total of some 160 stars. The intent of this survey is to obtain information on the large bubbles expected from the early O star phase of Wolf-Rayet stars, as well as providing estimates of the dust and gas masses of any ejecta shells occuring after the O star phase, and seen interior to the O star bubbles. So far, a total of more than 40 probable or suspected shells of > 0.5 degrees in diameter have been observed in our data, which may be associated with Wolf-Rayet stars. We indicate how information from this work may be used to pin down parts of the evolutionary sequence of Wolf-Rayet stars, including estimates of the time periods for which both WN and WC subtypes spend in an O star and heavy wind stage. This work is supported in part by a NASA ADP grant, NAG 5-2999.

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