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A Fabry-Perot study of Wolf-Rayet ring nebulae in M 33

Published online by Cambridge University Press:  25 May 2016

Anthony P. Marston ,
Laurent Drissen  and
Steve Godbout
Anthony P. Marston
Affiliation:
Physics & Astronomy Department, Drake University, Des Moines, IA 50311, USA
Laurent Drissen
Affiliation:
Département de physique, Université Laval, Quebec, Canada
Steve Godbout
Affiliation:
Département de physique, Université Laval, Quebec, Canada

Abstract

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We present a kinematical study of ring nebulae surrounding Wolf-Rayet stars in the Local Group galaxy M 33, based on Fabry-Perot data obtained at the CFHT. Most of these rings show evidence for multiple phases of mass ejection from the central star. Variations are noted in the [OIII]/Hα emission-line ratios across several ring nebulae generally associated a variation in kinematics. Significant [O III] emission appears to arise from the collision between the fast WR wind and surrounding ejecta from a prior phase, such as a RSG or LBV.

Type
Part 3. Interaction of Wolf-Rayet stars and other hot massive stars with their environment: colliding winds and ring nebulae
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 372 - 373
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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