Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992vucv.rept.....r&link_type=abstract
Annual Report, 1 Oct. 1991 - 30 Sep. 1992 Virginia Univ., Charlottesville. Dept. of Astronomy.
Astronomy and Astrophysics
Astronomy
Binary Stars, Chromosphere, Stellar Magnetic Fields, Cool Stars, Stellar Luminosity
Scientific paper
A literature search was performed for the probable magnetic properties of 15 Algol-type binaries. The properties examined included detection of Calcium, Hydrogen and Potassium emission, the x-ray luminosity determined from x-ray flares, detection of radio emission and type of polarization, evidence of variations in the brightness of the cool secondary and changes in the orbital periods of the binary which can be linked to changes in the polarity of the magnetic field of the cool star. The technique of Doppler Tomography was used in an attempt to isolate the source of the emission seen in the Hydrogen alpha difference profiles of Algol. The Doppler images indicate that most of the emission is not associated with the cool star but with the mass transfer process and, in particular, with gas found between the two stars.
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