Planck-dust-allsky

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


IPAC Authors
(alphabetical)

Fotina

Sebastiano Calchi Novati

Associate Scientist


Sean Carey

Senior Scientist