SPECTROSCOPIC OBSERVATIONS OF THE CATACLYSMIC VARIABLE PG 0917 + 342 - AN ULTRA SHORT-PERIOD NOVA LIKE SYSTEM

被引：20

作者：

DOBRZYCKA, D ^{[1
]}

HOWELL, SB ^{[1
]}

机构：

[1] PLANETARY SCI INST,TUCSON,AZ 85719

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 388卷 / 02期

关键词：

BINARIES SPECTROSCOPIC; NOVAE; CATACLYSMIC VARIABLES; STARS INDIVIDUAL (PG 0917 + 342);

D O I：

10.1086/171178

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present time-resolved spectroscopic observations of the cataclysmic variable PG 0917 + 342 which reveal it to be a nova-like system with an orbital period of 104 minutes. The spectra show lines of H, He I, and Ca I in absorption with variable emission cores, and H-alpha emission always above the continuum. Orbital parameters derived from our radial velocity data indicate a system inclination of approximately 32-degrees, M2 = 0.2 M., and a likely, but not well determined, mass for the white dwarf of approximately 0.3 M.. PG 0917 + 342 appears to be the first non-magnetic nova-like star below the CV period gap.

引用

页码：614 / 620

页数：7

共 35 条

[1]

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