Follow-up XMM-Newton observations of the cornerstone Wolf-Rayet binary WR140.

Details Follow-up XMM-Newton observations of the cornerstone Wolf-Rayet binary WR140. Follow-up XMM-Newton observations of the cornerstone Wolf-Rayet binary WR140.

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...40d&link_type=abstract

XMM-Newton Proposal ID #06513001

Astronomy and Astrophysics

Astronomy

Stars, White Dwarfs, Solar System, Wr140

Scientific paper

WR140 is the archetypal long period WR+O colliding wind binary (CWB) system, where the wind from the WR star collides with the wind of its massive companion. Its X-ray brightness, giant IR outbursts, and distinctive non-thermal (NT) radio lightcurve are all attributed to the wind-wind collision region (WCR), the properties of which dramatically change due to the exceptionally high orbital eccentricity (e > 0.88). XMM-Newton observations through periastron passage in AO7 provided unprecedented data on this system. Follow up observations will provide data to complete our view of the X-ray emission from its colliding winds, in order determine the key parameters of this system and the physical processes occuring at the WCR.

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