V369 Gem: A New Ellipsoidal Variable System with High-level Chromospheric Activity


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DAL H. A. , SİPAHİ E. , ÖZDARCAN O.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, cilt.64, 2012 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 64 Konu: 6
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1093/pasj/64.6.125
  • Dergi Adı: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN

Özet

In this study, we present BVR photometry of V369 Gem in 2006-2008. We combined our V data with the data taken from the literature. We analysed all of the data together, and calculated new light elements. General features of the light curves were discussed. The light curves were modelled with the Fourier method, and the Fourier coefficients were calculated. The cos (20) term was found to be dominant. The pre-whitened V light curves demonstrated that stellar spot activity also exists. There are generally two minima in the pre-whitened light curves. Thus, there must be two spotted areas, which are separated by about 180 from each other. As conclusions, we have remarked for the first time that V369 Gem is an ellipsoidal variable with high-level chromospheric activity.