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2006MNRAS.372.1325F - Mon. Not. R. Astron. Soc., 372, 1325-1332 (2006/November-1)
The giant star of the symbiotic system YY Her: rotation, tidal wave, solar-type cycle and spots.
FORMIGGINI L. and LEIBOWITZ E.M.
Abstract (from CDS):
The difference between the frequencies of these two last periods is the frequency of a tidal wave in the outer layers of the giant. A period which is a beat between the magnetic cycle and the tidal wave period is also apparent in the light curve. YY Her is a third symbiotic system exhibiting these cycles in their light curve, suggesting that a magnetic dynamo process is prevalent in the giant components of symbiotic stars, playing an important role in the outburst mechanism of some of these systems.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): binaries: symbiotic - stars: individual: YY Her - stars: magnetic fields - stars: oscillations
Simbad objects: 5
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