Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
권호 표지

BVRI PHOTOMETRY OF VV CEPHEI

  • Nha, Il-Seong (Yonsei University Observatory) ;
  • Im, Hong-Seo (Yonsei University Observatory) ;
  • Lee, Yong-Sam (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Jeong, Jang-Hae (Department of Astronomy and Space Science, Chungbuk National University)
  • Published : 1992.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

UBV observations of VV Cep were made in 1988-1992 as a part of the Ten-year Observing Program for Long Period Eclipsing Binary Stars(1982-1992) at Yonsei University Observatory. In addition to these the observations in the longer passbands in R and I are also made in the 1991-1992 season at the same observatory. Atmospheric extinction coefficinets determined by a comparison star 20 Cap for B and V each night have been deduced a linear relation, $K_B$=0.159+1.066kV. In this paper, light curves of this star in BVRI passbands for the 1991-1992 season only are presented. Two periodic light variations of both long-term and short-term are found as for 90 days and 20 days, respectively.

Keywords