2008/01/07 by P. Zasche, A. Liakos, M. Wolf +2 · 1 citation
Mathematics · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Gamma-ray bursts and supernovae #Mathematical analysis #Mathematics #Maxima and minima #Orbital period #Period (music) #Physics #Stars #Stellar, planetary, and galactic studies #Term (time) #astro-ph
paper · pdf · doi:10.1016/j.newast.2007.12.007
published as New Astron.13:405-413,2008 · 14 pages, 8 figures
openalex publication_date 2008/01/07 · arxiv created 2008/03/19 · arxiv updated 2010/11/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Six semi-detached Algol-type binaries lacking a period analysis were chosen to test for a presence of a third body. The O-C diagrams of these binaries were analyzed with the least-squares method by using all available times of minima. Also fourteen new minima, obtained from our observations, were included in the present research. The light-time effect was adopted as a main factor for the detailed description of the long-term period changes. Third bodies were found with orbital periods from 46 up to 84 years, and eccentricities from 0.0 to 0.78 for the selected binaries. The mass functions and the minimal masses of such bodies were also calculated.