Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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CCD PHOTOMETRY OF CONTACT BINARY WZ Cephei

접촉쌍성 WZ Cephei의 CCD 측광관측

  • Lee, Woo-Baik (Korea Astronomy & Space Science Institute) ;
  • Kang, Young-Woon (Department of Astronomy and Space Science, ARCSEC, Sejong University) ;
  • Oh, Kyu-Dong (Department of Earth Science Education, Chonnam National University)
  • 이우백 (한국천문연구원) ;
  • 강영운 (세종대학교 천문우주학과, 우주구조와 진화연구센터) ;
  • 오규동 (전남대학교 지구과학교육과)
  • Published : 2008.03.15
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Abstract

We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves. Our light curves show symmetry while previous light curves of Hoffmann (1984) show a high degree of asymmetry (the O'Connell effect). The BVR light curves were analyzed by the method of Wilson-Devinney Differential Correction. Our photometric results show a good agreement with those of Djurasevic et al. (1998).

접촉 식쌍성 WZ Cep를 CCD 측광관측하여 BVR 광도곡선을 얻고, 5개의 극심 시각을 결정하였다. 새로운 3색의 광도곡선을 Wilson-Devinney 프로그램에 적용하여 측광학적인 해를 구하고, 광도곡선의 장주기 변화를 검증하였다. 우리 광도곡선의 형태는 전형적인 W UMa형의 대칭적인 것으로 나타나는 반면에 Hoffimann(1984)의 광도곡선은 매우 심한 O'Connell 효과를 보이는 비대칭으로 나타난다. WZ Cep의 대칭적인 광도곡선은 Djurasevic et al.(1998)의 광도곡선에서도 확인되었다.

Keywords

References

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Cited by

  1. WZ Cephei: A Dynamically Active W UMa-Type Binary Star vol.28, pp.3, 2011, https://doi.org/10.5140/JASS.2011.28.3.163