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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742641.0, MPI für Astronomie / Publikationen_mpia
Binary source microlensing event OGLE-2016-BLG-0733: Interpretation of a long-term asymmetric perturbation
Authors:Jung, Y. K.; Udalski, A.; Yee, J. C.; Sumi, T.; Gould, A.; Han, C.; Albrow, M. D.; Lee, C. -. U.; Kim, S. -. L.; Chung, S. -. J.; Hwang, K. -. H.; Ryu, Y. -. H.; Shin, I. -. G.; Zhu, W.; Cha, S. -. M.; Kim, D. -. J.; Lee, Y.; Park, B. -. G.; Pogge, R. W.; Collaboration, K.; Pietrukowicz, P.; Kozłowski, S.; Poleski, R.; Skowron, J.; Mróz, P.; Szymański, M. K.; Soszyński, I.; Pawlak, M.; Ulaczyk, K.; Collaboration, O.; Abe, F.; Bennett, D. P.; Barry, R.; Bond, I. A.; Asakura, Y.; Bhattacharya, A.; Donachie, M.; Freeman, M.; Fukui, A.; Hirao, Y.; Itow, Y.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Nagakane, M.; Oyokawa, H.; Rattenbury, N. J.; Sharan, A.; Sullivan, D. J.; Suzuki, D.; Tristram, P. J.; Yamada, T.; Yonehara, A.; Collaboration, M. O. A.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:The Astronomical Journal
Volume:153
Issue / Number:3
Start Page:id. 129 (7 pp)
Audience:Not Specified
Abstract / Description:In the process of analyzing an observed light curve, one often confronts various scenarios that can mimic the planetary signals causing difficulties in the accurate interpretation of the lens system. In this paper, we present the analysis of the microlensing event OGLE-2016-BLG-0733. The light curve of the event shows a long-term asymmetric perturbation that would appear to be due to a planet. From the detailed modeling of the lensing light curve, however, we find that the perturbation originates from the binarity of the source rather than the lens. This result demonstrates that binary sources with roughly equal-luminosity components can mimic long-term perturbations induced by planets with projected separations near the Einstein ring. The result also represents the importance of the consideration of various interpretations in planet-like perturbations and of high-cadence observations for ensuring the unambiguous detection of the planet.
Free Keywords:binaries: general; gravitational lensing: micro
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.3847/1538-3881/aa5d07
URL:http://adsabs.harvard.edu/abs/2017AJ....153..129J
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