Observations of the WC9+OB system WR 65 in the infrared show variations of its dust emission consistent with a period near 4.8~yr, suggesting formation in a colliding-wind binary (CWB) having an elliptical orbit. If we adopt the IR maximum as zero phase, the times of X-ray maximum count and minimum extinction to the hard component measured by Oskinova & Hamann fall at phases 0.4--0.5, when the separation of the WC9 and OB stars is greatest. We consider WR 65 in the context of other WC8-9+OB stars showing dust emission.
@article{arxiv.1508.00724,
title = {The colliding-wind WC9+OB system WR 65 and dust formation by WR stars},
author = {P. M. Williams and K. A. van der Hucht},
journal= {arXiv preprint arXiv:1508.00724},
year = {2015}
}
Comments
International Workshop on Wolf-Rayet Stars, Potsdam, Germany, 1 - 5 June 2015