Thermal and non-thermal radio variations in WR 147

Details Thermal and non-thermal radio variations in WR 147 Thermal and non-thermal radio variations in WR 147

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.334..631w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 334, Issue 3, pp. 631-636.

Astronomy and Astrophysics

Astronomy

10

Stars: Individual: Wr 147, Stars: Wolf, Rayet, Radio Continuum: Stars

Scientific paper

We present new, high-resolution (70-mas) radio images of the colliding wind system WR 147 observed with Multi-element Radio-linked Interferometer Network (MERLIN), which show significant differences in the structures of both the thermally emitting WN8 stellar component (WR 147S) and the non-thermal wind-collision source (WR 147N). The size and shape of WR 147N change between the first and last epochs, as does the position of the emitting material. The presence of low-intensity emission between WR 147S and WR 147N is confirmed in one 5-GHz epoch, and this, together with the southerly movement of faint emission blobs seen by ourselves and Contreras & Rodríguez, suggests a north-south preferential outflow axis.

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