Detection and measurement of planetary systems with GAIA
Abstract
We use detailed numerical simulations and the Andromedae, planetary system as a template to evaluate the capability of the ESA Cornerstone Mission GAIA in detecting and measuring multiple planets around solar-type stars in the neighborhood of the Solar System. For the outer two planets of the Andromedae, system, GAIA high-precision global astrometric measurements would provide estimates of the full set of orbital elements and masses accurate to better than 1--10%, and would be capable of addressing the coplanarity issue by determining the true geometry of the system with uncertainties of order of a few degrees. Finally, we discuss the generalization to a variety of configurations of potential planetary systems in the solar neighborhood for which GAIA could provide accurate measurements of unique value for the science of extra-solar planets.
Cite
@article{arxiv.astro-ph/0104391,
title = {Detection and measurement of planetary systems with GAIA},
author = {A. Sozzetti and S. Casertano and M. G. Lattanzi and A. Spagna},
journal= {arXiv preprint arXiv:astro-ph/0104391},
year = {2009}
}
Comments
4 pages, 2 pictures, accepted for publication in A&A Letters