한국우주과학회:학술대회논문집(한국우주과학회보) (Bulletin of the Korean Space Science Society)
- 한국우주과학회 2003년도 한국우주과학회보 제12권2호
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- Pages.75-75
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- 2003
A Possible Detection of a Secondary Light-Time Orbit of the Massive Early type Eclipsing Binary Star AH Cephei
- Kim, Chun-Hwey (Dept. of Astronomy & Space Science. Chungbuk National University) ;
- Nha, Il-Seong (The Nha Il-Seong Museum of Astronomy) ;
- Jerzy M. Kreiner (The Mt. Suhora Observatory)
- 발행 : 2003.10.01
초록
All published and newly observed times of minimum light of the massive, early-type eclipsing binary star AH Cep were analyzed. After subtracting the light time effect due to the well-known third body from the residuals of the observed times of minimum light, it was found that the second-order Ο-C residuals varied in a cyclical way. It was assumed that the secondary oscillations were produced by a light time effect due to a fourth body so all the times of minimum light were reanalyzed with a differential least-squares scheme in order to obtain the light time orbits due to both the third and fourth bodies. The periods, eccentricities, semi-amplitudes of the light time orbits for the third and fourth-bodies were derived as : P
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