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A Jovian-mass planet in microlensing event OGLE-2005-BLG-071


Udalski, A and Jaroszynski, M and Paczynski, B and Kubiak, M and Szymanski, MK and Soszynski, I and Pietrzynski, G and Ulaczyk, K and Szewczyk, O and Wyrzykowski, L and Christie, GW and DePoy, DL and Dong, S and Gal-Yam, A and Gaudi, BS and Gould, A and Han, C and Lepine, S and McCormick, J and Park, BG and Pogge, RW and Bennett, DP and Bond, IA and Muraki, Y and Tristram, PJ and Yock, PCM and Beaulieu, JP and Bramich, DM and Dieters, SW and Greenhill, J and Hill, K and Horne, K and Kubas, D, A Jovian-mass planet in microlensing event OGLE-2005-BLG-071, Astrophysical Journal, 628, (1) pp. L109-L112. ISSN 0004-637X (2005) [Refereed Article]


Copyright Statement

Copyright 2005. The American Astronomical Society

DOI: doi:10.1086/432795


We report the discovery of a several-Jupiter-mass planetary companion to the primary lens 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 = mp/M = 0.0071 0.0003. 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 kiloparsecs toward the Galactic center.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Dieters, SW (Dr Stefan Dieters)
UTAS Author:Greenhill, J (Dr John Greenhill)
UTAS Author:Hill, K (Dr Kym Hill)
ID Code:35552
Year Published:2005
Web of Science® Times Cited:208
Deposited By:Physics
Deposited On:2005-08-01
Last Modified:2015-10-02
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