An Accretion-Disc Model for the Algol-Type Eclipsing Binary System AV Del

被引：4

作者：

Ghoreyshi, S. M. R. ^{[1
]}

Ghanbari, J. ^{[1
,2
]}

Salehi, F. ^{[2
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Phys, Sch Sci, Mashhad, Iran

[2] Khayyam Inst Higher Educ, Dept Phys, Mashhad, Iran

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 2011年 / 28卷 / 01期

关键词：

variable stars; binaries; eclipsing binary; accretion disc; VELOCITY CURVES; LIGHT CURVES; STAR LIGHT;

D O I：

10.1071/AS10009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This study inspects the light and radial-velocity curves of the eclipsing binary AV Del. In comparison with other studies already done, the study shows that the absolute elements, fundamental orbital and physical parameters of the system can be determined using the Wilson-Devinney code. Using these parameters, the configuration of the system is presented. Then, an accretion disc model for the system is introduced by using the SHELLSPEC code. The results indicate that AV Del is a semi-detached system in which an optically thick accretion disc is surrounding the primary star. The outer radius of the disc is 8.0 R-circle dot, corresponding to a distance of 1.1 R-circle dot from the surface of the secondary. Also, the temperature of the disc is calculated to be T = 5700 K.

引用

页码：38 / 45

页数：8

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