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Paper   IPM / Physic / 7762
School of Physics
  Title:   Velocity Curve Analysis of the Spectroscopic Binary Stars by the Nonlinear Least Squares
  Author(s):  K. Karami
  Status:   In Proceedings
  Proceeding: The 9th Asian-Pacific Regional IAU Meeting 2005 (APRIM 2005)
  Year:  2005
  Supported by:  IPM
We will introduce a new method to derive the orbital elements of the spectroscopic binary stars. Fitting the adopted radial velocity curves on the measured experimental data, the corresponding radial acceleration data are obtained. The orbital parameters are estimated by the nonlinear least squares of the radial velocity-acceleration curves. This method is implemented for the three double line spectroscopic binary systems RZ CAS, CC Cas and V1130 Tau. Numerical calculations show that the result are in good agreement with the those obtained by others using the method of Lehmann-Filhés.

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