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

Preprint

4 August 2000

preprint
Published by arXiv in arXiv

Abstract

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 (~1 day) deviation on an otherwise normal smooth, symmetric, single-lens light curve. 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 in the range of semi-major axes 1.5 AU < a < 4 AU.

Keywords

PLANET OBSERVATIONS
MICROLENSING EVENTS
GALACTIC PLANETS
YEARS OF PLANET
LENS POPULATION
MAJOR AXES
ANOMALIES
PLANETS

All Related Versions

Version 1, 2000-08-04, ArXiv
Version 2, 2001-07-17, ArXiv
Published version: The Astrophysical Journal, 556 (2), L113.

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