Wednesday, July 17, 2013

1307.4084 (Radosław Poleski et al.)

Super-massive planets around late-type stars - the case of OGLE-2012-BLG-0406Lb    [PDF]

Radosław Poleski, Andrzej Udalski, Subo Dong, Michał K. Szymański, Igor Soszyński, Marcin Kubiak, Grzegorz Pietrzyński, Szymon Kozłowski, Paweł Pietrukowicz, Krzysztof Ulaczyk, Jan Skowron, Łukasz Wyrzykowski, Andy Gould
The core accretion theory of planetary formation does not predict super-Jupiters to form beyond the snow line of a low mass stars. We present a discovery of 3.9 +- 1.2 M_Jup mass planet orbiting the 0.59 +- 0.17 M_Sun star using the gravitational microlensing method. During the event, the projected separation of the planet and the star is 3.9 +- 1.0 AU i.e., the planet is significantly further from the host star than the snow line. This is a third such planet discovered using microlensing technique and challenges the core accretion theory. This is also the first microlensing planet found by analyzing data gathered by a single telescope only.
View original: http://arxiv.org/abs/1307.4084

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