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arXiv · 2201.04312

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

In-Gu Shin·Jennifer C. Yee·Kyu-Ha Hwang·Andrew Gould·Andrzej Udalski·Ian A. Bond·Michael D. Albrow·Sun-Ju Chung·Cheongho Han·Youn Kil Jung·Hyoun Woo Kim·Yoon-Hyun Ryu·Yossi Shvartzvald·Weicheng Zang·Sang-Mok Cha·Dong-Jin Kim·Seung-Lee Kim·Chung-Uk Lee·Dong-Joo Lee·Yongseok Lee·Byeong-Gon Park·Richard W. Pogge·Przemek Mróz·Michał K. Szymański·Jan Skowron·Radek Poleski·Igor Soszyński·Paweł Pietrukowicz·Szymon Kozłowski·Krzysztof Ulaczyk·Charles A. Beichman·Geoffery Bryden·Sebastiano Calchi Novati·Sean Carey·B. Scott Gaudi·Calen B. Henderson·Wei Zhu·Fumio Abe·Richard K. Barry·David P. Bennett·Aparna Bhattacharya·Hirosane Fujii·Akihiko Fukui·Yuki Hirao·Yoshitaka Itow·Rintaro Kirikawa·Naoki Koshimoto·Iona Kondo·Yutaka Matsubara·Sho Matsumoto·Shota Miyazaki·Yasushi Muraki·Greg Olmschenk·Arisa Okamura·Clément Ranc·Nicholas J. Rattenbury·Yuki Satoh·Stela Ishitani Silva·Takahiro Sumi·Daisuke Suzuki·Taiga Toda·Paul J. Tristram·Aikaterini Vandorou·Hibiki Yama
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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: $M_{\rm host} = 0.38$--$0.57\, M_{\odot}$, $m_p = 0.59$--$0.87\, M_{\rm Jup}$, and the system is located at the Galactic bulge ($D_L \sim 8.1$ kpc). Because this was a high-magnification event, we are also able to empirically show that the "cheap-space parallax" concept Gould & Yee (2012) produces well-constrained (and consistent) results for $|π_{\rm E}|$. 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.

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In-Gu Shin, Jennifer C. Yee, Kyu-Ha Hwang, Andrew Gould, Andrzej Udalski, Ian A. Bond, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Youn Kil Jung, Hyoun Woo Kim, Yoon-Hyun Ryu, Yossi Shvartzvald, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Przemek Mróz, Michał K. Szymański, Jan Skowron, Radek Poleski, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Krzysztof Ulaczyk, Charles A. Beichman, Geoffery Bryden, Sebastiano Calchi Novati, Sean Carey, B. Scott Gaudi, Calen B. Henderson, Wei Zhu, Fumio Abe, Richard K. Barry, David P. Bennett, Aparna Bhattacharya, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Yoshitaka Itow, Rintaro Kirikawa, Naoki Koshimoto, Iona Kondo, Yutaka Matsubara, Sho Matsumoto, Shota Miyazaki, Yasushi Muraki, Greg Olmschenk, Arisa Okamura, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Stela Ishitani Silva, Takahiro Sumi, Daisuke Suzuki, Taiga Toda, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama. 2022-01-12. OGLE-2016-BLG-1093Lb: A Sub-Jupiter-mass Spitzer Planet Located in Galactic Bulge. https://doi.org/10.3847/1538-3881%2Fac6513

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