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X-ray Variability and the Secondary Star

  • M. F. Corcoran
  • K. Ishibashi
Chapter
Part of the Astrophysics and Space Science Library book series (ASSL, volume 384)

Abstract

We discuss the history of X-ray observations of the η Car system, concentrating on the periodic variability discovered in the 1990s. We discuss the interpretation of these variations, concentrating on a model of the system as a “colliding-wind” binary. This interpretation allows the physical and orbital parameters of η Car and its companion star to be constrained.

Keywords

Column Density Stellar Wind Contact Discontinuity Companion Star Secondary Star 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Notes

Acknowledgements

The authors would like to acknowledge many fruitful discussions with a large number of colleagues, among them Kris Davidson, Ted Gull, Roberta Humphreys, Augusto Damineli, Jean Swank, Stephen White, Julian Pittard, David Henley, Tony Moffat, Stan Owocki, John Hillier, Virpi Niemela, Nolan Walborn, and many others too numerous to fully mention. This work was supported in part by Chandra grant GO3-4008A and NASA grant NAS5-32490. This research made use of software and data available from the High Energy Astrophysics Science Archive Research Center, and NASA’s Astrophysics Data System.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Center for Research and Exploration in Space Science & Technology, Code 662, Goddard Space Flight CenterGreenbeltUSA
  2. 2.Universities Space Research AssociationColumbiaUSA
  3. 3.Department of PhysicsNagoya UniversityNagoyaJapan

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