| Velocity Curve Analysis of Spectroscopic Binary Stars AI Phe, GM Dra, HD 93917 and V502 Oph by Nonlinear Regression |
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| 作者姓名： | K. Karami R. Mohebi |
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| 作者单位： | [1]Department of Physics, University of Kurdistan, Pasdaran St., E O. Box 66177-15175, Sanandaj, Iran [2]Research Institute for Astronomy ＆ Astrophysics of Maragha （RIAAM）, E O. Box 55134-441, Maragha, Iran [3]Institute for Advanced Studies in Basic Sciences （IASBS）, Gava Zang, P. O. Box 45195-1159, Zanjan, Iran |
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| 基金项目： | Acknowledgements This work was supported by the Department of Physics, University of Kurdistan, Sanandaj, Iran; the Research Institute for Astronomy ＆ Astrophysics of Maragha （RIAAM）, Maragha, Iran; the Institute for Advanced Studied in Basic Sciences （IASBS）, Zanjan, Iran. |
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| 摘 要： | We introduce a new method to derive the orbital parameters of spectroscopic bi-nary stars by nonlinear least squares of (o-c). Using the measured radial velocity data of the four double lined spectroscopic binary systems, AI Phe, GM Dra, HD 93917 and V502 Oph, we derived both the orbital and combined spectroscopic elements of these systems. Our numerical results are in good agreement with the those obtained using the method of Lehmann-Filhe's.
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| 关 键 词： | stars: binaries: eclipsing — stars: binaries: spectroscopic |
| 修稿时间： | 2006-11-15 |
Velocity Curve Analysis of Spectroscopic Binary Stars AI Phe, GM Dra, HD 93917 and V502 Oph by Nonlinear Regression |
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| K. Karami R. Mohebi.Velocity Curve Analysis of Spectroscopic Binary Stars AI Phe, GM Dra, HD 93917 and V502 Oph by Nonlinear Regression[J].Chinese Journal of Astronomy and Astrophysics,2007,7(4):558-564. |
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| Authors: | K Karami Mohebi |
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| Abstract: | We introduce a new method to derive the orbital parameters of spectroscopic bi-nary stars by nonlinear least squares of (o-c). Using the measured radial velocity data of the four double lined spectroscopic binary systems, AI Phe, GM Dra, HD 93917 and V502 Oph, we derived both the orbital and combined spectroscopic elements of these systems. Our numerical results are in good agreement with the those obtained using the method of Lehmann-Filhe's. |
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| Keywords: | stars: binaries: eclipsing - stars: binaries: spectroscopic |
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