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@article{1642037,
author = {Wolf, M. and Zasche, P. and Kucakova, H. and Masek, M. and Honkova, K. and Jurysek, J. and Paschke, A. and Smelcer, L. and Zejda, Miloslav},
article_location = {Cracovie},
article_number = {1},
doi = {http://dx.doi.org/10.32023/0001-5237/69.1.5},
keywords = {binaries: eclipsing; Stars: fundamental parameters; Stars: individual: V0345 Lac; YY Sgr;and DR Vul},
language = {eng},
issn = {0001-5237},
journal = {Acta astronomica},
title = {Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul},
url = {https://ui.adsabs.harvard.edu/abs/2019AcA....69...63W/abstract},
volume = {69},
year = {2019}
}
TY - JOUR
ID - 1642037
AU - Wolf, M. - Zasche, P. - Kucakova, H. - Masek, M. - Honkova, K. - Jurysek, J. - Paschke, A. - Smelcer, L. - Zejda, Miloslav
PY - 2019
TI - Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul
JF - Acta astronomica
VL - 69
IS - 1
SP - 63-78
EP - 63-78
PB - Polska akademia nauk. Komitet atronomii
SN - 00015237
KW - binaries: eclipsing
KW - Stars: fundamental parameters
KW - Stars: individual: V0345 Lac
KW - YY Sgr;and DR Vul
UR - https://ui.adsabs.harvard.edu/abs/2019AcA....69...63W/abstract
L2 - https://ui.adsabs.harvard.edu/abs/2019AcA....69...63W/abstract
N2 - We present more results of our long-term observational project to analyze the variations of the orbital period for early-type eccentric eclipsing binaries. About sixty new precise mid-eclipse times were measured or derived for three eclipsing binaries, namely V0345 Lac, YY Sgr, and DR Vul. Based on current O - C diagrams, we found in all cases that beside the typical apsidal motion the times of minima show additional cyclical changes likely caused by a third body orbiting the eclipsing pair. The new light curve solution of V0345 Lac results in a moderate orbital eccentricity (e = 0.26) of this binary. The periods of apsidal motion are 1580 yr, 295 yr, and 36 yr, respectively. The relativistic contributions to the total apsidal-motion rate are small for all three eccentric binaries - about 5-14%. The third-body orbital periods are relatively short: 24 yr, 19 yr and 66 yr, and the minimal masses of third bodies are: 2.0 M-circle dot, 0.8 M-circle dot, and 7.2 M-circle dot, respectively.
ER -
WOLF, M., P. ZASCHE, H. KUCAKOVA, M. MASEK, K. HONKOVA, J. JURYSEK, A. PASCHKE, L. SMELCER and Miloslav ZEJDA. Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul. \textit{Acta astronomica}. Cracovie: Polska akademia nauk. Komitet atronomii, 2019, vol.~69, No~1, p.~63-78. ISSN~0001-5237. Available from: https://dx.doi.org/10.32023/0001-5237/69.1.5.
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