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In hot pursuit of the hidden companion of η Carinae: an X-ray determination of the wind parameters

Published online by Cambridge University Press:  26 May 2016

Julian M. Pittard  and
Michael F. Corcoran
Julian M. Pittard
Affiliation:
Department of Physics and Astronomy, The University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
Michael F. Corcoran
Affiliation:
Universities Space Research Association, 7501 Forbes Blvd, Ste 206, Seabrook, MD 20706, USA, and Laboratory for High Energy Astrophysics, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA

Abstract

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We perform X-ray spectral fits to a recently obtained Chandra grating spectrum of η Carinae, one of the most massive and powerful stars in the Galaxy and which is strongly suspected to be a colliding wind binary system. The good fit that we obtain gives us further confidence in the binary hypothesis, and we find M ≈ 2.5 × 10–4 M⊙ yr–1 for the mass loss rate of η Car.

Type
Part 1. Atmospheres of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 218 - 219
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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