Frequency decomposition of astrometric signature of planetary systems
Maciej Konacki, Andrzej J. Maciejewski, Alex Wolszczan
Abstract
We present theoretical analysis of the astrometric searches for extrasolar planets with the Space Interferometry Mission (SIM). Particularly, we derive a model for the future measurements with SIM and discuss the problem of reliable estimation of orbital elements of planets. For this purpose we propose a new method of data analysis and present a numerical test of its application on simulated SIM astrometric measurements of Andromedae planetary system. We demonstrate that our approach allows successfull determination of its orbital elements.
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