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OSU College of Arts and Sciences Department of Astronomy

MicroFUN 2005

OGLE-2005-BLG-071 Planet

We are pleased to report the discovery of a several-Jupiter mass planetary companion to the primary star in microlensing event OGLE-2005-BLG-071. This is the second clear detection of a planet using the microlensing technique. Data for this event comes from the OGLE, MicroFUN, MOA, PLANET, and RoboNet collaborations. Photometry at the peak of the event (see below) yields an extremely clean detection of deviation from the light curve expected from an isolated lens. Detailed modeling of the light curve gives a tightly-constrained planet-to-star mass ratio of q=m_p/M=0.007.
OB05071 Light Curve
Light Curve of OGLE-2005-BLG-071 composed of data from
the OGLE, MicroFUN, MOA, PLANET, and RoboNet sites.
[Full Resolution (352k JPEG)]

Discovery Paper:
Udalski et al. (astro-ph/0505451), submitted to ApJ Letters.

Press Releases:
Ohio State Research News Release.
Stardome Observatory (Auckland, NZ) Press Release

Press Coverage:
BBC News
Astronomy Magazine
The New Zealand Herald
Sidney Morning Herald
New Scientist
JPL PlanetQuest Newsletter

Editorial Cartoon, NZ Herald (2005 May 26 - © NZ Herald)
[For non-kiwis: that's the NZ Parliament Building]