APSIDAL MOTION IN THE ECLIPSING BINARIES V1136 CYGNI, ES LACERTAE, MZLACERTAE AND EQ VULPECULAE

Authors
WOLF M DIETHELM R KOZYREVA VS SAROUNOVA L
Citation
M. Wolf et al., APSIDAL MOTION IN THE ECLIPSING BINARIES V1136 CYGNI, ES LACERTAE, MZLACERTAE AND EQ VULPECULAE, Astronomy and astrophysics (Berlin), 334(3), 1998, pp. 840-844
Citations number
20
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics (Berlin) → ACNP
ISSN journal
00046361
Volume
334
Issue
3
Year of publication
1998
Pages
840 - 844
Database
ISI
SICI code
0004-6361(1998)334:3<840:AMITEB>2.0.ZU;2-L
Abstract
About thirty new times of minimum light recorded with photoelectric me ans have been gathered for the early-type eccentric eclipsing binaries V1136 Cyg (P = 3.46(d), e = 0.33), ES Lac (P = 4.46(d), e = 0.20), MZ Lac (P = 3.16(d), e = 0.42) and EQ Vul (P = 9.30(d), e = 0.36). The O - C diagrams are analyzed using all reliable timings found in the lit erature and new values for the elements of the apsidal motion are comp uted. We find new periods of apsidal motion of about 520, 300, 440 and 2200 years for V1136 Cyg, ES Lac, MZ Lac and EQ Vul, respectively.