SIMBAD references

2000MNRAS.316..143D - Mon. Not. R. Astron. Soc., 316, 143-151 (2000/July-3)

WR 146 - observing the OB-type companion.

DOUGHERTY S.M., WILLIAMS P.M. and POLLACCO D.L.

Abstract (from CDS):

We present new radio and optical observations of the colliding-wind system WR146 aimed at understanding the nature of the companion to the Wolf-Rayet (WR) star and the collision of their winds. The radio observations reveal emission from three components: the WR stellar wind, the non-thermal wind-wind interaction region and, for the first time, the stellar wind of the OB companion. This provides the unique possibility of determining the mass-loss rate and terminal wind velocity ratios of the two winds, independent of distance. Respectively, these ratios are 0.20±0.06 and 0.56±0.17 for the OB-companion star relative to the WR star. A new optical spectrum indicates that the system is more luminous than had been believed previously. We deduce that the `companion' cannot be a single, low-luminosity O8 star as suggested previously, but is either a high-luminosity O8 star, or possibly an O8+WC binary system.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): stars: individual: WR146 - stars: Wolf-Rayet - radio continuum: stars

CDS comments: Northern and Southern sources = [DWV96] WR 146 N and S.

Simbad objects: 14

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2020.01.28-05:31:21

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