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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731787.0, MPI für Astronomie / Publikationen_mpia
A Super-Jupiter microlens planet characterized by high-cadence KMTNeT Micorlensing Survey observations of OGLE-2015-BLG-0954
Authors:Shin, I. -. G.; Ryu, Y. -. H.; Udalski, A.; Albrow, M.; Cha, S. -. M.; Choi, J. -. Y.; Chung, S. -. J.; Han, C.; Hwang, K. -. H.; Jung, Y. K.; Kim, D. -. J.; Kim, S. -. L.; Lee, C. -. U.; Lee, Y.; Park, B. -. G.; Park, H.; Pogge, R. W.; Yee, J. C.; Pietrukowicz, P.; Mroz, P.; Kozlowski, S.; Poleski, R.; Skowron, J.; Soszynski, I.; Szymanski, M. K.; Ulaczyk, K.; Wyrzykowski, L.; Pawlak, M.; Gould, A.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:Journal of Korean Astronomical Society
Volume:49
Issue / Number:3
Start Page:73
End Page:81
Audience:Not Specified
Abstract / Description:We report the characterization of a massive (m_p=3.9± 1.4 M_{jup}) microlensing planet (OGLE-2015-BLG-0954Lb) orbiting an M dwarf host (M=0.33 ± 0.12 M_⊙) at a distance toward the Galactic bulge of 0.6^{+0.4}_{-0.2} kpc, which is extremely nearby by microlensing standards. The planet-host projected separation is a_perp ˜ 1.2 au. The characterization was made possible by the wide-field (4 deg^2) high cadence (Γ = 6 hr^{-1}) monitoring of the Korea Microlensing Telescope Network (KMTNet), which had two of its three telescopes in commissioning operations at the time of the planetary anomaly. The source crossing time t_*=16 min is among the shortest ever published. The high-cadence, wide-field observations that are the hallmark of KMTNet are the only way to routinely capture such short crossings. High-cadence resolution of short caustic crossings will preferentially lead to mass and distance measurements for the lens. This is because the short crossing time typically implies a nearby lens, which enables the measurement of additional effects (bright lens and/or microlens parallax). When combined with the measured crossing time, these effects can yield planet/host masses and distance.}
Free Keywords:gravitational microlensing; planets
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:1225-4614 %R 10.5303/JKAS.2016.49.3.073
URL:http://cdsads.u-strasbg.fr/abs/2016JKAS...49...73S
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