Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240..148p&link_type=abstract
Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, Proceedings of IAU Symposium #240, held 22-25 August, 2006
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
Spectroscopic observations in the FUV during the past two decades have provided us with a wealth of information on plasma flows and interactions in OB interacting binary systems. In the 1980-90s data from the IUE spacecraft revealed a high temperature interaction region apparently associated with the gas stream impact and confirmed infall and outflow of gas stream material. In addition interaction regions associated with shocks due to colliding winds in close O-type binaries were discovered. More recently observations of Algol systems with OB mass gainers with the FUSE spacecraft have provided evidence of bipolar flows in several systems and revealed a well-defined accretion hot spot at the site of the gas stream impact in U Cep. In this talk the major plasma components associated with mass transfer that have been discovered by FUV spectroscopy are discussed with emphasis given to the newest observations.
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