OGLE-2016-BLG-1093Lb: A Sub-Jupiter-mass Spitzer Planet Located in the Galactic Bulge

June 2022 • 2022AJ....163..254S

Authors • Shin, In-Gu • Yee, Jennifer C. • Hwang, Kyu-Ha • Gould, Andrew • Udalski, Andrzej • Bond, Ian A. • Albrow, Michael D. • Chung, Sun-Ju • Han, Cheongho • Kil Jung, Youn • Woo Kim, Hyoun • Ryu, Yoon-Hyun • Shvartzvald, Yossi • Zang, Weicheng • Cha, Sang-Mok • Kim, Dong-Jin • Kim, Seung-Lee • Lee, Chung-Uk • Lee, Dong-Joo • Lee, Yongseok • Park, Byeong-Gon • Pogge, Richard W. • Mróz, Przemek • Szymański, Michał K. • Skowron, Jan • Poleski, Radek • Soszyński, Igor • Pietrukowicz, Paweł • Kozłowski, Szymon • Ulaczyk, Krzysztof • Beichman, Charles A. • Bryden, Geoffery • Calchi Novati, Sebastiano • Carey, Sean • Gaudi, B. Scott • Henderson, Calen B. • Zhu, Wei • Abe, Fumio • Barry, Richard K. • Bennett, David P. • Bhattacharya, Aparna • Fujii, Hirosane • Fukui, Akihiko • Hirao, Yuki • Itow, Yoshitaka • Kirikawa, Rintaro • Koshimoto, Naoki • Kondo, Iona • Matsubara, Yutaka • Matsumoto, Sho • Miyazaki, Shota • Muraki, Yasushi • Olmschenk, Greg • Okamura, Arisa • Ranc, Clément • Rattenbury, Nicholas J. • Satoh, Yuki • Silva, Stela Ishitani • Sumi, Takahiro • Suzuki, Daisuke • Toda, Taiga • Tristram, Paul J. • Vandorou, Aikaterini • Yama, Hibiki • The MOA Collaboration

Abstract • OGLE-2016-BLG-1093 is a planetary microlensing event that is part of the statistical Spitzer microlens parallax sample. The precise measurement of the microlens parallax effect for this event, combined with the measurement of finite-source effects, leads to a direct measurement of the lens masses and system distance, M _host =0.38-0.57 M _⊙ and m _p = 0.59-0.87 M _Jup, and the system is located at the Galactic bulge (D _L ~ 8.1 kpc). Because this was a high-magnification event, we are also able to empirically show that the "cheap-space parallax" concept produces well-constrained (and consistent) results for ∣π _E∣. This demonstrates that this concept can be extended to many two-body lenses. Finally, we briefly explore systematics in the Spitzer light curve in this event and show that their potential impact is strongly mitigated by the color constraint.

Links

• PREPRINT http://arxiv.org/abs/2201.04312
• ELECTR https://doi.org/10.3847%2F1538-3881%2Fac6513
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2022AJ....163..254S
• PDF https://iopscience.iop.org/article/10.3847/1538-3881/ac6513/pdf
• DATA http://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/254