Radial velocity studies of close binary stars. XIII

被引：60

作者：

Rucinski, Slavek M. ^{[1
]}

Pribulla, Theodor ^{[1
]}

Mochnacki, Stefan W. ^{[1
]}

Liokumovich, Evgenij ^{[1
]}

Lu, Wenxian ^{[1
]}

DeBond, Heide ^{[1
]}

De Ridder, Archie ^{[1
]}

Karmo, Toomas ^{[1
]}

Rock, Matt ^{[1
]}

Thomson, J. R. ^{[1
]}

Ogoza, Waldemar ^{[2
]}

Kaminski, Krysztof ^{[3
]}

Ligeza, Piotr ^{[3
]}

机构：

[1] Univ Toronto, David Dunlap Observ, Richmond Hill, ON L4C 4Y6, Canada

[2] Pedag Univ, Mt Suhora Observ, PL-30084 Krakow, Poland

[3] Adam Mickiewicz Univ Observ, PL-60286 Poznan, Poland

来源：

ASTRONOMICAL JOURNAL | 2008年 / 136卷 / 02期

关键词：

binaries : close; binaries : eclipsing; binaries : spectroscopic;

D O I：

10.1088/0004-6256/136/2/586

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Radial velocity (RV) measurements and sine-curve fits to the orbital RV variations are presented for ten close binary systems: EG Cep, V1191 Cyg, V1003 Her, BD+7 degrees 3142, V357 Peg, V407 Peg, V1123 Tau, V1128 Tau, HH UMa, and PY Vir. While most of the studied eclipsing systems are contact binaries, EG Cep is a detached or a semidetached double-lined binary and V1003 Her is a close binary of an uncertain type seen at a very low inclination angle. We discovered two previously unknown triple systems, BD+7 degrees 3142 and PY Vir, both with late spectral-type (K2V) binaries. Of interest is the low mass-ratio (q = 0.106) close binary V1191 Cyg showing an extremely fast period increase; the system has a very short period for its spectral type and shows a W-type light curve, a feature rather unexpected for such a low mass-ratio system.

引用

页码：586 / 593

页数：8

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