Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21335001a&link_type=abstract
American Astronomical Society, AAS Meeting #213, #350.01; Bulletin of the American Astronomical Society, Vol. 41, p.486
Astronomy and Astrophysics
Astronomy
Scientific paper
According to current plans, SIM/NASA mission with be launched just after the end of operations of Gaia/ESA mission. This is a new situation which enables long term astrometric projects that could not be achieved by either of mission alone, or will increase the science cases of SIM targets with a much smaller effort than originally assumed. This study is the first to analyze in detail this new situation and try to explore the benefits that can be obtained by both communities (NASA and ESA) by combining both datasets. A few particular sciences cases will be discussed in detail to prove with examples the capabilities of the long astrometric observation at high accuracy. Several practical issues must be addressed before any attempt of combination of both data-sets; such as the reference frame used, and the precise coordinate definition of the observable quantities.
Anglada-Escude Guillem
Debes John H.
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