Collisionless plasmas in WR140, η Carinae and other colliding-wind systems.

Details Collisionless plasmas in WR140, η Carinae and other colliding-wind systems. Collisionless plasmas in WR140, η Carinae and other colliding-wind systems.

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe...7p&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Physics

High Resolution Stellar Spectroscopy

Scientific paper

The several-year orbits of the most X-ray brilliant colliding-wind systems WR140 (WC7+O5) and η Carinae (LBV) up to their nearly simultaneous periastron passages in 2009 January have given the opportunity to make direct high-resolution measurements of the collisionless plasma at different orbital phases. The clear differences are compared with the predictions of analytical and numerical models of the physics and dynamics involved. They also provide outstanding elemental abundance estimates for stellar evolutionary purposes and inform the shock physics at work in the binary systems in which the majority of massive stars are formed.

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