Microlensing Constraints on the Frequency of Jupiter Mass Planets

Details Microlensing Constraints on the Frequency of Jupiter Mass Planets Microlensing Constraints on the Frequency of Jupiter Mass Planets

2000-04-19

arxiv.org/abs/astro-ph/0004269v1

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures. To appear in ``Microlensing 2000: A New Era of Microlensing Astrophysics,'' an ASP conference proceedings,

Scientific paper

Microlensing is the only technique likely, within the next 5 years, to constrain the frequency of Jupiter-analogs. The PLANET collaboration has monitored nearly 100 microlensing events of which more than 20 have sensitivity to the perturbations that would be caused by a Jovian-mass companion to the primary lens. No clear signatures of such planets have been detected. These null results indicate that Jupiter mass planets with separations of 1.5-3 AU occur in less than 1/3 of systems. A similar limit applies to planets of 3 Jupiter masses between 1-4 AU.

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