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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 742532.0, MPI für Astronomie / Publikationen_mpia
OGLE-2016-BLG-0596Lb: A high-mass planet from a high-magnification pure-survey microlensing event
Authors:Mróz, P.; Han, C.; and, nullval; Udalski, A.; Poleski, R.; Skowron, J.; Szymański, M. K.; Soszyński, I.; Pietrukowicz, P.; Kozłowski, S.; Ulaczyk, K.; Wyrzykowski, Ł.; Pawlak, M.; group, O.; Albrow, M. D.; Cha, S. -. M.; Chung, S. -. J.; Jung, Y. K.; Kim, D. -. J.; Kim, S. -. L.; Lee, C. -. U.; Lee, Y.; Park, B. -. G.; Pogge, R. W.; Ryu, Y. -. H.; Shin, I. -. G.; Yee, J. C.; Zhu, W.; Gould, A.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:The Astronomical Journal
Issue / Number:4
Start Page:id. 143 (11 pp)
Audience:Not Specified
Abstract / Description:We report the discovery of a high mass ratio planet, q = 0.012, i.e., 13 times higher than the Jupiter/Sun ratio. The host mass has not yet been measured but can be determined or strongly constrained from adaptive optics imaging. The planet was discovered in a small archival study of high-magnification events in pure-survey microlensing data, which was unbiased by the presence of anomalies. The fact that it was previously unnoticed may indicate that more such planets lie in archival data and could be discovered by a similar systematic study. In order to understand the transition from predominantly survey+followup to predominately survey-only planet detections, we conduct the first analysis of these detections in the observational (s, q) plane. Here s is the projected separation in units of the Einstein radius. We find some evidence that survey+followup is relatively more sensitive to planets near the Einstein ring, but that there is no statistical difference in sensitivity by mass ratio.
Free Keywords:gravitational lensing: micro; planetary systems
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.3847/1538-3881/aa5da2
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