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OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event

MPS-Authors

Han,  Cheongho
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bond,  Ian A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Udalski,  Andrzej
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gould,  Andrew
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bozza,  Valerio
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hirao,  Yuki
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cassan,  Arnaud
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

authors,  Leading
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Albrow,  Michael D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chung,  Sun-Ju
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hwang,  Kyu-Ha
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  Chung-Uk
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ryu,  Yoon-Hyun
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shin,  In-Gu
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shvartzvald,  Yossi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yee,  Jennifer C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jung,  Youn Kil
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  Doeon
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  Woong-Tae
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cha,  Sang-Mok
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  Dong-Jin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  Hyoun-Woo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  Seung-Lee
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  Dong-Joo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  Yongseok
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Park,  Byeong-Gon
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pogge,  Richard W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zang,  Weicheng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collaboration,  The KMTNet
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Abe,  Fumio
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Barry,  Richard
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bennett,  David P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bhattacharya,  Aparna
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Donachie,  Martin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fukui,  Akihiko
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Itow,  Yoshitaka
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kawasaki,  Kohei
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kondo,  Iona
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Koshimoto,  Naoki
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Li,  Man Cheung Alex
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Matsubara,  Yutaka
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Muraki,  Yasushi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Miyazaki,  Shota
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nagakane,  Masayuki
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ranc,  Clément
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rattenbury,  Nicholas J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suematsu,  Haruno
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sullivan,  Denis J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sumi,  Takahiro
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suzuki,  Daisuke
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tristram,  Paul J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yonehara,  Atsunori
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collaboration,  The MOA
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mróz,  Przemek
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Szymański,  Michał K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Skowron,  Jan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Poleski,  Radek
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Soszyński,  Igor
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pietrukowicz,  Paweł
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kozłowski,  Szymon
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ulaczyk,  Krzysztof
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rybicki,  Krzysztof A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Iwanek,  Patryk
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wrona,  Marcin
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collaboration,  The OGLE
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Beichman,  Charles A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bryden,  Geoffery
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carey,  Sean
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gaudi,  B. Scott
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Henderson,  Calen B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Team,  Spitzer Microlensing
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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Citation

Han, C., Bond, I. A., Udalski, A., Gould, A., Bozza, V., Hirao, Y., et al. (2019). OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event. The Astrophysical Journal, 876.


Cite as: https://hdl.handle.net/21.11116/0000-0005-D104-A
Abstract
In this work, we present the analysis of the binary microlensing event OGLE-2018-BLG-0022 that is detected toward the Galactic bulge field. The dense and continuous coverage with the high-quality photometry data from ground-based observations combined with the space-based Spitzer observations of this long timescale event enables us to uniquely determine the masses M 1 = 0.40 ± 0.05 M ☉ and M 2 = 0.13 ± 0.01 M ☉ of the individual lens components. Because the lens-source relative parallax and the vector lens-source relative proper motion are unambiguously determined, we can likewise unambiguously predict the astrometric offset between the light centroid of the magnified images (as observed by the Gaia satellite) and the true position of the source. This prediction can be tested when the individual-epoch Gaia astrometric measurements are released.