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VLA observations of the interacting-wind binary system WR 147

Published online by Cambridge University Press:  25 May 2016

M. Eugenia Contreras  and
Luis F. Rodríguez
M. Eugenia Contreras
Affiliation:
Instituto de Astronomía, UNAM, Apdo. Postal 70-264, 04510 México, D.F., México
Luis F. Rodríguez
Affiliation:
Instituto de Astronomía, UNAM, Apdo. Postal 70-264, 04510 México, D.F., México

Extract

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Wolf-Rayet stars are losing mass via their strong winds. Some of them show thermal and non-thermal radio emission and from this group some have companions forming binary systems. It has been suggested that the synchrotron emission arises from the interaction region where the winds of the two stars collide. WR 147 seems to be one of these systems, having a companion and emitting thermal as well as non-thermal radiation. Besides, it has been suggested that it has an anisotropic wind. In the present work we continue studying the WR 147 system by observing it at a radio wavelength of 3.6 cm in two different epochs. We have looked for evidence to support the idea that WR 147 is a colliding-wind binary system. We have also looked for time variations in the source during the time interval of ∼ 1.4 years separating our observations.

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. 344 - 345
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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