2009/08/11 by N. Dolez, S. Vauclair, E. Michel +14
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Binary number #Binary star #Light curve #Oscillation (cell signaling) #Physics #Satellite #Star (game theory) #Stars #Stellar, planetary, and galactic studies #Variable star #astro-ph.SR
paper · pdf · doi:10.1051/0004-6361/200911903
published as Astronomy and Astrophysics, 2009 · 7 pages, 8 figures, use (Astronomy-Astrophysics format/macro LAtex)
openalex publication_date 2009/08/11 · arxiv created 2009/09/28 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
<i>Context. <i/>We present an analysis of the observations of HD 51106 and HD 50747 by the satellite CoRoT, obtained during its initial run, and of the spectroscopic preparatory observations.<i>Aims. <i/>We complete an analysis of the light curve, extract the main frequencies observed, and discuss some preliminary interpretations about the stars.<i>Methods. <i/>We used standard Fourier transform and pre-whitening methods to extract information about the periodicities of the stars.<i>Results. <i/>HD 51106 is an ellipsoidal binary, the light curve of which can be completely explained by the tidal deformation of the star and smaller secondary effects. HD 50747 is a triple system containing a variable star, which exhibits many modes of oscillation with periods in the range of a few hours. On the basis of this period range and the analysis of the physical parameters of the star, we conclude that HD 50747 is a <i>γ<i/>-Doradus star.