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| Paper: |
Radial Velocities of Visual and Interferometric Binaries |
| Volume: |
185, Precise Stellar Radial Velocities, IAU Colloquium 170 |
| Page: |
308 |
| Authors: |
Scarfe, C. D.; Barlow, D. J. |
| Abstract: |
We discuss the use of precise radial velocities for orbit studies of binary and multiple stars. Although they are desirable to achieve highly accurate masses for systems of large amplitude, their greatest value will be for systems of long period and low amplitude. These studies require high spectrograph stability, and in some cases resolution of the spectra may prove troublesome. We shall review observational requirements, reduction techniques, and methods of solving for elements that satisfy simultaneously the observations in three dimensions, based on experience with radial velocities whose precision is near the lower limit for this colloquium, obtained over the past 35 years with the DAO coude spectrograph, and consider the gains that should be achievable over similar intervals in the future, by means of higher precision in all the relevant data. |
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