Light-time effect detected in fourteen eclipsing binaries

0539357 - FZÚ 2021 RIV FR eng J - Journal Article
Zasche, P. - Uhlař, R. - Svoboda, P. - Cagaš, P. - Mašek, Martin
Light-time effect detected in fourteen eclipsing binaries.
Astronomy & Astrophysics. Roč. 643, Nov (2020), s. 1-10, č. článku A130. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA MŠMT LTT18004; GA MŠMT(CZ) LM2018102; GA MŠMT EF16_013/0001402
Grant - others:OP VVV - AUGER-CZ(XE) CZ.02.1.01/0.0/0.0/16_013/0001402
Institutional support: RVO:68378271
Keywords : binaries: eclipsing * stars: fundamental parameters
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.803, year: 2020
Method of publishing: Limited access
https://doi.org/10.1051/0004-6361/202039243

The available minima timings of 14 selected eclipsing binaries (V1297 Cas, HD 24105, KU Aur, GU CMa, GH Mon, AZ Vel, DI Lyn, DK Her, GQ Dra, V624 Her, V1134 Her, KIC 6187893, V1928 Aql, V2486 Cyg) were collected and analyzed. Using the automatic telescopes, surveys, and satellite data, we derived more than 2500 times of eclipses, accompanied with our own ground-based observations. These data were used to detect the period variations in these multiple systems. The eclipse timing variations were described using the third-body hypothesis and the light-time effect. Their respective periods were derived as 2.5, 16.2, 27, 20, 64, 5.6, 22, 115, 27, 42, 6.9, 11.2, 4.1, and 8.4 years for these systems, respectively. The predicted minimal mass of the third body was calculated for each of the systems, and we discuss here their prospective detectability.
Permanent Link: http://hdl.handle.net/11104/0317054