The Mass and Wind-momentum Ratios in the Colliding-wind Binary WR140

Details The Mass and Wind-momentum Ratios in the Colliding-wind Binary WR140 The Mass and Wind-momentum Ratios in the Colliding-wind Binary WR140

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943615d&link_type=abstract

American Astronomical Society, AAS Meeting #219, #436.15

Astronomy and Astrophysics

Astronomy

Scientific paper

Thirty-six milli-arcsecond resolution VLBA observations of the colliding-wind binary system WR140 reveal the motion of the wind-collision region (WCR) during two orbit cycles. Using orbit parameters derived from optical spectroscopy (Fahed et al. 2011) and orbit inclination deduced from the VLBA observations, the separation of the centre of mass and the WCR is determined through fitting the proper motion of the WCR. This constrains the relationship between mass-ratio and the wind-momentum ratio of the two stars, and constrains the stellar masses in the system.

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