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Paper: Combining High Angular-Resolution Interferometry and Spectroscopy in Studies of Stars and Stellar Systems
Volume: 185, Precise Stellar Radial Velocities, IAU Colloquium 170
Page: 390
Authors: Davis, J.
Abstract: A number of long baseline optical/infrared interferometers have commenced their scientific programs or are under development. These instruments will provide accurate measurements of the angular sizes of single stars and the angular separations of binary systems at resolutions impossible with conventional telescopes. The combination of the results of high-resolution spectroscopy with the interferometric data will, for many classes of objects, provide a powerful method for studying them that neither technique can do alone. Examples include the combination of spectroscopic and interferometric data for spectroscopic binaries and, in particular, for double-lined binaries and single-lined binaries of known parallax to determine fundamental stellar quantities. Another example concerns the study of Cepheid variables, where the combination of the data can provide an independent calibration of the zero point of the luminosity scale. The requirements and potential of these and other examples of combined interferometric-spectroscopic studies will be discussed.
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