Astrometric binaries with a variable component

被引：0
|
作者：
Halbwachs, JL [1 ]
Pourbaix, D [1 ]
机构：
[1] Astron Observ, UMR 7550, F-67000 Strasbourg, France
来源：
Proceedings of the Symposium the Three-Dimensional Universe with Gaia | 2005年 / 576卷
关键词：
astrometry; stars : variables : general; binaries : general;
D O I：
暂无
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
We present two models dedicated to unresolved binary systems hosting a photometric variable: the first is the 'VIM' (for Variability Induced Movers) model, which deals with couples of fixed stars. The second consists of the calculation of the astrometric orbit of the so-called 'orbital VIM' systems; in this case, the photometric variability of the system is used to derive the semi-major axis of the orbit of the variable component around the barycentre, instead of the usual photocentric orbit. Additional information about the physical properties of the system are thus obtained.
引用
收藏
页码：575 / 578
页数：4
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