光谱双星AI Phe、GM Dra、HD 93917和V502 Oph速度曲线的非线性回归分析

Chinese Journal of Astronomy and Astrophysics Pub Date : 2007-08-01 DOI:10.1088/1009-9271/7/4/12

K. Karami, R. Mohebi

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引用次数: 11

摘要

本文介绍了一种利用非线性最小二乘(o−c)法推导双星轨道参数的新方法。利用AI Phe、GM Dra、HD 93917和V502 Oph 4个双星系统的径向速度实测数据，推导出了这些双星系统的轨道元和组合元。数值结果与采用Lehmann-Filhes方法得到的结果吻合较好。

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Velocity Curve Analysis of Spectroscopic Binary Stars AI Phe, GM Dra, HD 93917 and V502 Oph by Nonlinear Regression

We introduce a new method to derive the orbital parameters of spectroscopic binary 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-Filhes.

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Chinese Journal of Astronomy and Astrophysics

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