Colliding Stellar Winds in IOTA Orionis.

Details Colliding Stellar Winds in IOTA Orionis. Colliding Stellar Winds in IOTA Orionis.

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..435c&link_type=abstract

Chandra Proposal ID #02200045

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Chandra Proposal Id #02200045

Scientific paper

IOTA Orionis is an early type binary system consisting of two O-type stars. This system is one of the prototypes for the possible existence of colliding winds. The X-rays are thought to be generated in cooling zones behind shock fronts in the winds. Models show that X-ray emission is extremely dependent on the amount of cooling in the shock flow. Fits to ROSAT data show that post-shock temperatures assuming cooling layers behind the shocks instead of isothermal shocks result in significantly higher post shock temperatures. The highly resolved X-ray spectrum of IOTA Orionis will provide direct measures for post shock tempertures and densities to test current models. It may also help to understand the unusually hot spectrum observed previously in Theta Ori.

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