OGLE-2012-BLG-0950Lb: The First Planet Mass Measurement from Only Microlens Parallax and Lens Flux

20 Oct 2016 Koshimoto N. Udalski A. Beaulieu J. P. Sumi T. Bennett D. P. Bond I. A. Rattenbury N. Fukui A. Batista V. Marquette J. B. Brillant S. Abe F. Asakura Y. Bhattacharya A. Donachie M. Freeman M. Hirao Y. Itow Y. Li M. C. A. Ling C. H. Masuda K. Matsubara Y. Matsuo T. Muraki Y. Ohnishi K. Oyokawa H. Saito To. Sharan A. Shibai H. Sullivan D. J. Suzuki D. Tristram P. J. Yonehara A. Kozlowski S. Pietrukowicz P. Poleski R. Skowron J. Soszynski I. Szymanski M. K. Ulaczyk K. Wyrzykowski L.

We report the discovery of a microlensing planet OGLE-2012-BLG-0950Lb with the planet/host mass ratio of $q \sim 2 \times 10^{-4}$. A long term distortion detected in both MOA and OGLE light curve can be explained by the microlens parallax due to the Earth's orbital motion around the Sun... (read more)

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  • EARTH AND PLANETARY ASTROPHYSICS