GAIA Photometric System: Evaluation of Performance

被引：0
|
作者：
Vladas Vansevičius
Audrius Bridžius
Ramutis Drazdys
机构：
[1] Institute of Physics,
来源：
Astrophysics and Space Science | 2002年 / 280卷
关键词：
Stellar Population; Bright Star; Photometric System; Halo Star; Stellar Parameter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present a method and results of evaluation of the photometric systems (PSs) proposed for the GAIA mission. The method, however, can be applied for the analysis of virtually any multicolour PS designed for the global investigation of the Galactic stellar populations. Performance of the 1F, 2A and 3G PSs is evaluated taking into account their ability to simultaneously determine the main stellar parameters,Teff, log g, [M/H] and EB-V, for a large variety of stars down to G ∼ 20. The representative Galactic stellar populations were constructed and employed for evaluation of the PSs. Despite the fact that the 2A and 3G PSs perform significantly better than the 1F (presently adopted as a baseline PS for GAIA), we conclude that still there is no photometric system proposed to date, which would allow to achieve the scientific objectives of the GAIA mission.
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页码：31 / 39
页数：8
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