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Radio images of Wolf-Rayet 147

Published online by Cambridge University Press:  07 August 2017

R.J. Davis ,
M. F. Bode ,
K.A. van der Hucht  and
P. M. Williams
R.J. Davis
Affiliation:
1NRAO, PO Box O, Socorro, NM 87801, U.S.A.
M. F. Bode
Affiliation:
2Astrophysics Group, Liverpool John Moores University, Liverpool L3 3AF, U.K.
K.A. van der Hucht
Affiliation:
3SRON Utrecht, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
P. M. Williams
Affiliation:
4The Observatories, Blackford Hill, Edinburgh, EH9 3HJ, U.K.

Abstract

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We present preliminary MERLIN radio maps at 1.7 and 5GHz of the Wolf-Rayet star WR147 (AS431). These provide the highest spatial resolution images of this object at these frequencies to date. Our results confirm that WR147 comprises two primary radio sources lying on a N-S axis. Combining results at 1.7 and 5 GHz gives a spectrum for the southerly source consistent with optically thick thermal emission. The northerly source appears to be non-thermal. In addition, extended emission is observed at both frequencies which links the two sources. The northerly source is elongated in a direction roughly perpendicular to the axis of this extended emission, and the southerly source appears double on the 5 GHz map.

Type
Session VIII - Hydrodynamics and high-energy physics of winds accreting on neutrons stars and black holes
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 547 - 549
Copyright
Copyright © Kluwer 1995 

References

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