SPECTROSCOPY OF THE CATACLYSMIC VARIABLE UU-AQR

被引：18

作者：

DIAZ, MP

STEINER, JE

机构：

[1] Inst. Astron. e Geof́isico, Universidade de São Paulo, 01051, São Paulo

来源：

ASTRONOMICAL JOURNAL | 1991年 / 102卷 / 04期

关键词：

D O I：

10.1086/115968

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Time-resolved spectroscopic observations of the eclipsing cataclysmic variable UU Aqr are presented. The high-resolution data show that H-alpha has a strong, phase-dependent, asymmetric profile. The radial velocity curve, derived from the broad line wings, shows a semiamplitude of 120 km/s. Amplitude and phase for the "S-wave" are also derived. A mass ratio of 0.4 and a mass of 0.9M. for the white dwarf are obtained. The emission line behavior suggests that most of the H-alpha emission comes from an optically thin hot spot, while the accretion disk must be optically thick.

引用

页码：1417 / 1422

页数：6

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