Journal
ASTROPHYSICAL JOURNAL
Volume 556, Issue 2, Pages L113-L116Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/323141
Keywords
gravitational lensing; planetary systems; stars : late-type; stars : low-mass; brown dwarfs; techniques : photometric
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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 (similar to1 day) deviation on the smooth, symmetric light curve produced by a single lens. We find no such anomalies and infer that less than one-third of the similar to0.3 M. stars that typically comprise the lens population have Jupiter mass companions with semimajor axes in the range of 1.5 AU < a < 4 AU. Since orbital periods of planets at these radii are 3-15 yr, the outer portion of this region is currently difficult to probe with any other technique.
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