Apsidal motion in the eclipsing binary IT Cassiopeiae

被引：0

作者：

Holmgren, D ^{[1
]}

Wolf, M ^{[1
]}

机构：

[1] CHARLES UNIV,INST ASTRON,PRAGUE,CZECH REPUBLIC

来源：

OBSERVATORY | 1996年 / 116卷 / 1134期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report two new photoelectric times of minimum for the eclipsing binary IT Cas (P=3.89665 days, e=0.08, V=11.2 mag, F6V+F6V). Using all precise timings found in the literature, the O-C diagram is analyzed and new values for the elements of the apsidal motion and the internal-structure constant are computed. We have found a period of apsidal motion U=404+/-63 years and the value of internal-structure constant k(2)=0.0440+/-0.0106. The secondary star of IT Cas has been identified as a delta Scuti star.

引用

页码：307 / 312

页数：6

共 18 条

[1] [Anonymous], 1992, SMR
[2] BUSCH H, 1975, MITT BRUNO H BURGEL, V9, P2
[3] BUSCH H, 1994, BAV MITTEILUNGEN, V68, P4
[4] BUSCH H, 1993, BAV MITT, V62, P3
[5] DIETHELM R, 1989, BBSAG B, V91, P5
[6] GENERAL-RELATIVISTIC PERIASTRON ADVANCES IN ECLIPSING BINARY-SYSTEMS
GIMENEZ, A
[J]. ASTROPHYSICAL JOURNAL, 1985, 297 (02) : 405 - 412
[7] A NEW METHOD FOR THE ANALYSIS OF APSIDAL MOTIONS IN ECLIPSING BINARIES
GIMENEZ, A
GARCIAPELAYO, JM
[J]. ASTROPHYSICS AND SPACE SCIENCE, 1983, 92 (01) : 203 - 222
[8] HOLMGREN D, 1995, OBSERVATORY, V115, P188
[9] PHOTOMETRIC LIGHT CURVES AND PHYSICAL PARAMETERS OF THE ECLIPSING BINARY-SYSTEMS IT CAS, CO-CEP, AI-HYA WITH POSSIBLE APSIDAL MOTIONS
KHALIULLIN, KF
KOZYREVA, VS
[J]. ASTROPHYSICS AND SPACE SCIENCE, 1989, 155 (01) : 53 - 69
[10] Kopal Z., 1978, Dynamics of Close Binary Systems, DOI DOI 10.1007/978-94-009-9780-6

← 1 2 →