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Eccentric Eclipsing Binary YY Sagittarii |
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| Authors: | Marek Wolf P G Niarchos K D Gazeas V N Manimanis Lenka Kotková Anton Paschke Miloslav Zejda |
| Institution: | (1) Astronomical Institute, Charles University Prague, V Holesovickach 2, Praha 8, Czech Republic;(2) Dept. of Astrophysics, Astronomy and Mechanics, University of Athens, Athens, Greece;(3) Astronomical Institute, Academy of Sciences, Ondřejov, Czech Republic;(4) Brno Regional Network of Observers, Brno, Czech Republic |
| Abstract: | Seven new precise times of minimum light have been gathered for the triple eccentric eclipsing binary YY Sgr (P = 2d.63, e = 0.16). Its O--C diagram is presented and improved elements of the apsidal motion and the light-time effect are given. We found a new short period of the third body of about 18.5 years in an eccentric orbit (e 3 ≃ 0.4). |
| Keywords: | Eclipsing binary Apsidal motion Light-time effect YY Sgr |
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