Non-LTE effects in streams, and mass-transfer rates in three eclipsing binaries

Details Non-LTE effects in streams, and mass-transfer rates in three eclipsing binaries Non-LTE effects in streams, and mass-transfer rates in three eclipsing binaries

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..907o&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Oct. 1989, p. 907-916. Research supported by the U

Astronomy and Astrophysics

Astronomy

19

Eclipsing Binary Stars, Interstellar Extinction, Mass Transfer, Nonequilibrium Thermodynamics, Stellar Mass Accretion, Hot Stars, Light Curve, Magnetohydrodynamic Flow, Photoionization, Thermodynamic Equilibrium, Ubv Spectra

Scientific paper

A mass-transferring stream in an eclipsing binary is seen in projection against the hot star in roughly the quarter-period before primary eclipse. At this time a small fraction of the light of the hot star is blocked by the stream, depressing light curves slightly. Five-color observations of such light curves in AQ Cas, RZ Sct, and U Sge are discussed. Non-LTE and LTE predictions of stream-produced light losses with these observations are compared, the validity of this mechanism is discussed, and mass-transfer rates are estimated.

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