Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21732005b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #320.05; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Gravitational microlensing is unique among exoplanet discovery methods for its sensitivity to low-mass planets located beyond the snow-line, where planet formation is thought to be the most efficient. For exoplanets orbiting stars in the Galactic disk, it is often possible to directly measure the mass of the planets via the microlensing parallax effect, due to the orbital motion of the Earth. But many of the exoplanets found by microlensing orbit stars in the Galactic bulge, and for these systems, the Earth's orbital motion does not allow a mass measurement. But, a few observations of the stellar lensing effect from a small telescope in the outer solar system will provide a mass measurements for these systems and allow us to determine the exoplanet mass function in the Galactic bulge.
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