Limits on the Abundance of Galactic Planets From Five Years of Planet Observations

Details Limits on the Abundance of Galactic Planets From Five Years of Planet Observations Limits on the Abundance of Galactic Planets From Five Years of Planet Observations

2000-08-04

arxiv.org/abs/astro-ph/0008078v2

Astronomy and Astrophysics

Astrophysics

4 pages including 2 figures. Significantly revised to match published version. Primary conclusions unchanged. To appear in ApJ

Scientific paper

10.1086/323141

We search for signatures of planets in 43 intensively monitored microlensing events that were observed between 1995 and 1999. Planets would be expected to cause a short duration (~1 day) deviation on the smooth, symmetric light curve produced by a single-lens. We find no such anomalies and infer that less than 1/3 of the ~0.3 M_sun stars that typically comprise the lens population have Jupiter-mass companions with semi-major axes in the range of 1.5 AU

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