2016/05/06 by D. Kjurkchieva, Diana Petrova Kjurkchieva, V. A. Popov +5 · 11 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Light curve #Luminosity #Primary component #RADIUS #Stars #Stellar classification #Stellar, planetary, and galactic studies #astro-ph.SR
paper · pdf · doi:10.1088/1674-4527/16/9/135
published in Research in Astronomy and Astrophysics 16(9), 003 (IOP Publishing) · Accepten for publication in RAA
arxiv created 2016/05/06 · openalex created_date 2016/06/24 · openalex publication_date 2016/08/30 · arxiv updated 2016/09/28 · openalex updated_date 2026/08/05
Photometric observations in Sloan g' and i' bands of four W UMa stars, NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907, are presented. The light curve solutions reveal that all targets have overcontact configurations with fillout factors within 0.15–0.26. Their components are G-K spectral types and are almost in thermal contact. They are also relatively close in size and luminosity: the radius ratios r 2 / r 1 are within 0.75–0.90; the luminosity ratios l 2 / l 1 are within 0.53–0.63. The results of the light curve solution of CSS J004004.7+385531 imply the weak limb-darkening effect of its primary component and possible presence of additional absorbing features in the system.