Signatures of the 3-D Wind-Wind Collision Cavity in η Car

Details Signatures of the 3-D Wind-Wind Collision Cavity in η Car Signatures of the 3-D Wind-Wind Collision Cavity in η Car

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010rmxac..38...52m&link_type=abstract

The Interferometric View on Hot Stars (Eds. Th. Rivinius & M. Curé) Revista Mexicana de Astronomía y Astrofísica (Serie de Confe

Astronomy and Astrophysics

Astronomy

4

Hydrodynamics, Stars: Atmospheres, Stars: Individual ( Η Carinae), Stars: Winds, Outflows

Scientific paper

We discuss recent efforts to apply 3-D Smoothed Particle Hydrodynamics (SPH) simulations to model the binary wind collision in η Carinae, focusing on the Bore Hole effect, wherein the fast wind from the hot secondary star carves a cavity in the dense primary wind, allowing increased escape of radiation from the hotter/deeper layers of the primary's extended photosphere. This model may provide clues on how/where UV light is escaping the system, the illumination of distant material in various directions, and the parameters/orientation of the binary orbit. The role of interferometric observations in testing the models is also discussed.

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