2004/12/15 by Søren Meibom, S. Meibom, Meibom, S.
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0412392
12 pages, 8 figures,to be published in ASP Conference Series, Tidal Evolution and Oscillations in Binary Stars
arxiv created 2004/12/15 · openalex publication_date 2004/12/15 · arxiv updated 2009/12/01 · openalex created_date 2020/06/05 · openalex updated_date 2026/07/28
We present preliminary observational results on tidal synchronization in\ndetached solar-type binary stars in the open clusters M35 (NGC2168; ~ 150 Myr)\nand M34 (NGC1039; ~ 250 Myr). M35 and M34 provide populations of close\nlate-type binaries with ages that make them attractive observational tests of\nmodels of tidal synchronization during the early main-sequence phase. A\ncombined dataset of stellar rotation periods from time-series photometry and\nbinary orbital periods and eccentricities from time-series spectroscopy enables\nus to determine the angular rotation velocity of the primary star and the\norbital angular velocity at periastron. Comparison of the stellar and orbital\nangular velocities provides information about the level of synchronization in\nindividual binary stars.\n