SETI public: A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071

Title: A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071

Authors: A. Udalski, M. Jaroszynski, B. Paczynski, M. Kubiak, M.K. Szymanski,
I. Soszynski, G. Pietrzynski, K. Ulaczyk, O. Szewczyk, L. Wyrzykowski (The
OGLE Collaboration), G.W. Christie, D.L. DePoy, S. Dong, A. Gal-Yam, B.S.
Gaudi, A. Gould, C. Han, S. Lepine, J. McCormick, B.-G. Park, R.W. Pogge (The
microFUN Collaboration), D.P. Bennett, I.A. Bond, Y. Muraki, P.J. Tristram,
P.C.M.Yock (From the MOA Collaboration), J.P. Beaulieu, D.M. Bramich, S.W.
Dieters, J. Greenhill, K. Hill, K. Horne, D. Kubas (From the PLANET/RoboNet
Collaboration)
Comments: 5 pages. Submitted to ApJ Letters
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We report the discovery of a several-Jupiter mass planetary companion to the
primary star in microlensing event OGLE-2005-BLG-071. Precise (<1%) photometry
at the peak of the event yields an extremely high signal-to-noise ratio
detection of a deviation from the light curve expected from an isolated lens.
The planetary character of this deviation is easily and unambiguously
discernible from the gross features of the light curve. Detailed modeling
yields a tightly-constrained planet-star mass ratio of q=m_p/M=0.007. This is
the second robust detection of a planet with microlensing, demonstrating that
the technique itself is viable and that planets are not rare in the systems
probed by microlensing, which typically lie several kpc toward the Galactic
center.

\\ ( http://arXiv.org/abs/astro-ph/0505451 , 71kb)