Journal of Astronomy and Space Sciences

  • 제20권4호
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  • Pages.249-260
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  • 2003
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  • 2093-5587(pISSN)
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  • 2093-1409(eISSN)
한국우주과학회 (The Korean Space Science Society)
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W UMa형 접촉쌍성 AH Cancri에 대한 측광학적 연구

PHOTOMETRIC STUDY OF A W UMa TYPE CONTACT BINARY AH CNC

  • 발행 : 2003.12.01
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⟨ 이전 논문 다음 논문 ⟩

초록

1998년 12월부터 1999년 5월까지 총 10일간 W UMa형 접촉쌍성 AH Cnc를 소백산천문대의 61cm 망원경과 PM512 CCD 카메라, 그리고 BVI 필터를 사용하여 CCD 측광을 수행하였다. 새롭게 얻은 BVI 광도곡선을 Wilson-Devinney 쌍성모델의 Mode 3(접촉형)으로 분석해서 측광해를 구하고 Roche 모형을 얻었다. 지금까지 발표된 모든 극심시각들과 이번 관측자료를 사용하여 얻은 (O-C)도를 분석해서 영년주기 증가율와 질량이동률을 계산하였다.

CCD photometric observations of a W UMa type contact binary AH Cnc were performed for ten nights from December 1998 to May 1999 using a PM512 CCD camera and BVI filters attached to the 61㎝ reflector at Sobaeksan Optical Astronomy Observatory. New BVI light curves were analyzed with contact Mode 3 of the Wilson-Devinney binary model. We obtained photometric solutions and Roche geometry of this binary system. Through the analysis of the (O-C) diagram with all times of minimum light published so far and including hour's secular variations of orbital period and the mass transfer rate were calculated.

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피인용 문헌

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