THE ORBITAL PERIOD OF CY UMA

被引：6

作者：

MARTINEZPAIS, IG ^{[1
]}

CASARES, J ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT PHYS,NUCL PHYS LAB,OXFORD OX1 3RH,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1995年 / 275卷 / 03期

关键词：

BINARIES; GENERAL; STARS; INDIVIDUAL; CY UMA; NOVAE; CATACLYSMIC VARIABLES;

D O I：

10.1093/mnras/275.3.699

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present intermediate resolution spectroscopy of the dwarf nova CY UMa in quiescence. From the radial velocities of the Ha emission, we derive an orbital period of 0.067 95 +/- 8 x 10(-5) d, which disagrees with previous photometric estimates. We also constrain the system parameters. The core of the H alpha emission seems to be dominated by a component almost in phase with the line wings. Such a component would originate in a region opposite to the secondary star with respect to the white dwarf. This effect appears to be a common feature of SU UMa systems.

引用

页码：699 / 702

页数：4

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