The Effect of Circumstellar Material on the Light Curves of Eclipsing Binary Systems
S. M. R. Ghoreyshi A B D , J. Ghanbari A C and F. Salehi CA Department of Physics, School of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
B Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, Apdo. Postal 72-3 (Xangari), Morelia, Michoacan 58089, Mexico
C Department of Physics, Khayyam Institute of Higher Education, Mashhad, Iran
D Corresponding author. Email: m.ghoreyshi@crya.unam.mx
Publications of the Astronomical Society of Australia 28(4) 290-298 https://doi.org/10.1071/AS10040
Submitted: 9 November 2010 Accepted: 18 August 2011 Published: 4 October 2011
Abstract
This study inspects the influence of various effects and free parameters of the accretion disc and circumstellar material on the emerging light curve of eclipsing binary systems that have a circumstellar disc, by using the shellspec code. The results indicate that some of the parameters, namely the temperature and inclination of the disc, spot, jet, stream and shell, significantly affect on the emerging light curve, while some other parameters, namely the exponent of the power-law behavior of the density of the disc, microturbulence, inner and outer radius of the disc, do not noticeably affect on the emerging light curve. An application to the Algol-type eclipsing binary system AV Del and an accretion disc model for the system using the shellspec code is included.
Keywords: variable stars — binaries — eclipsing binary — accretion disc — stars: individual (AV Del)
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