NSV 09295: A double-mode RR Lyrae variable

被引：15

作者：

GarciaMelendo, E ^{[1
]}

Clement, CM ^{[1
]}

机构：

[1] UNIV TORONTO,DEPT ASTRON,TORONTO,ON M5S 3H8,CANADA

来源：

ASTRONOMICAL JOURNAL | 1997年 / 114卷 / 03期

关键词：

D O I：

10.1086/118551

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An analysis of more than 2000 CCD observations of the field RR Lyrae star NSV 09295 shows that the star is a double-mode RR Lyrae (RRd) variable with P-0 = 0.(d)46334 and P-1 = 0.(d)34323, This brings the total of known field RRd stars in the Milky Way galaxy to four. These four variables are compared with the RRd stars in galactic globular clusters and with the field RRd stars in the LMC, and in the Draco and Sculptor dwarf galaxies. It appears that all known RRd stars have a metal abundance of less than [Fe/H] = -1.6. (C) 1997 American Astronomical Society.

引用

页码：1190 / 1194

页数：5

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