ABSOLUTE-MAGNITUDE CALIBRATION FOR W-UMA-TYPE SYSTEMS .2. INFLUENCE OF METALLICITY

被引：34

作者：

RUCINSKI, S

机构：

[1] UNIV TORONTO,DEPT ASTRON,TORONTO,ON M5S 1A1,CANADA

[2] YORK UNIV,DEPT PHYS & ASTRON,DOWNSVIEW,ON,CANADA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1995年 / 107卷 / 713期

关键词：

D O I：

10.1086/133603

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A modification to the absolute-magnitude calibration for W UMa-type systems, taking into account differences in metal abundances, is derived on the basis of contact binary systems recently discovered in metal-poor clusters. A preliminary estimate of the magnitude of the metallicity-dependent term for the (B-V)-based calibration is Delta M(V)= -(0.3+/-0.1)X[Fe/H]. The calibration based on the (V-I-C) color is expected to be less sensitive with the correction term approximate to - (0.12+/-0.05)X[Fe/H].

引用

页码：648 / 652

页数：5

共 21 条

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[2]

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