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Spectroscopic binary mass determination using relativity

Published online by Cambridge University Press:  06 January 2010

Shay Zucker  and
Tal Alexander
Shay Zucker
Affiliation:
Dept. of Geophysics & Planetary Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel email: shayz@post.tau.ac.il
Tal Alexander
Affiliation:
Faculty of Physics, Weizmann Institute of Science PO Box 26, Rehovot 76100, Israel email: Tal.Alexander@weizmann.ac.il
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Abstract

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High-precision radial-velocity techniques, which enabled the detection of extra-solar planets, are now sensitive to the lowest-order relativistic effects in the data of spectroscopic binary stars (SBs). We show how these effects can be used to derive the absolute masses of the components of eclipsing single-lined SBs and double-lined SBs from Doppler measurements alone. High-precision stellar spectroscopy can thus substantially increase the number of measured stellar masses, thereby improving the mass-radius and mass-luminosity calibrations.

Keywords

binaries: closebinaries: spectroscopiccelestial mechanicsmethods: data analysisrelativitytechniques: radial velocities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S261: Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis , April 2009 , pp. 135 - 139
Copyright
Copyright © International Astronomical Union 2010

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