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Optical interferometry from the Earth

Published online by Cambridge University Press:  06 January 2010

Andreas Quirrenbach
Andreas Quirrenbach*
Affiliation:
Landessternwarte, Zentrum für Astronomie der Universität Heidelberg, Königstuhl 12, D-69117 Heidelberg, Germany email: A.Quirrenbach@lsw.uni-heidelberg.de
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Abstract

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Ground-based optical interferometers can perform astrometric measurements with a precision approaching 10μas between pairs of stars separated by ~10″ on the sky. These narrow-angle measurements can be used to search for extrasolar planets and to determine their orbital parameters, to characterize microlensing events, and to measure the orbits of stars around the black hole at the center of our Galaxy.

Keywords

instrumentation: interferometerstechniques: high angular resolutiontechniques: interferometricastrometrygravitational lensingGalaxy: center
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. 277 - 285
Copyright
Copyright © International Astronomical Union 2010

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