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2000MNRAS.311..225S - Mon. Not. R. Astron. Soc., 311, 225-233 (2000/January-2)
A photometric study of the eclipsing symbiotic binary AR Pavonis.
SKOPAL A., DJURASEVIC G., JONES A., DRECHSEL H., ROVITHIS-LIVANIOU H. and ROVITHIS P.
Abstract (from CDS):
We determined a distance to the system of 5.8±1.5kpc, the mass ratio of the giant to the hot star, MgMh=0.4±0.1, the mass of the giant, Mg=1.8+1/-0.5M☉ and its radius, Rg=167±15R☉.
During quiescence, the LC has characteristic features similar to those observed in cataclysmic variables (CVs). It can be well reproduced by a model of a large accretion disc surrounding the hot star. However, it is probable that the geometry of the transferred material in the Roche lobe of the accretor in AR Pav is different from that of CVs.
During active phases the shape of the LC changes considerably. A complex wave-like variation developed as a function of the orbital phase with an amplitude of ∼1mag. It is interpreted in terms of a collisionally heated emission region located on the giant surface and arising from the hot star eruption.
Abstract Copyright: 2000, Royal Astronomical Society
Journal keyword(s): binaries: eclipsing - binaries: symbiotic - stars: fundamental parameters - stars: individual: AR Pav
Simbad objects: 2
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