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

Han, Cheongho; Bond, Ian A.; Udalski, Andrzej; Gould, Andrew; Bozza, Valerio; Hirao, Yuki; Cassan, Arnaud; authors, Leading; Albrow, Michael D.; Chung, Sun-Ju; Hwang, Kyu-Ha; Lee, Chung-Uk; Ryu, Yoon-Hyun; Shin, In-Gu; Shvartzvald, Yossi; Yee, Jennifer C.; Jung, Youn Kil; Kim, Doeon; Kim, Woong-Tae; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Hyoun-Woo; Kim, Seung-Lee; Lee, Dong-Joo; Lee, Yongseok; Park, Byeong-Gon; Pogge, Richard W.; Zang, Weicheng; Collaboration, The KMTNet; Abe, Fumio; Barry, Richard; Bennett, David P.; Bhattacharya, Aparna; Donachie, Martin; Fukui, Akihiko; Itow, Yoshitaka; Kawasaki, Kohei; Kondo, Iona; Koshimoto, Naoki; Li, Man Cheung Alex; Matsubara, Yutaka; Muraki, Yasushi; Miyazaki, Shota; Nagakane, Masayuki; Ranc, Clément; Rattenbury, Nicholas J.; Suematsu, Haruno; Sullivan, Denis J.; Sumi, Takahiro; Suzuki, Daisuke; Tristram, Paul J.; Yonehara, Atsunori; Collaboration, The MOA; Mróz, Przemek; Szymański, Michał K.; Skowron, Jan; Poleski, Radek; Soszyński, Igor; Pietrukowicz, Paweł; Kozłowski, Szymon; Ulaczyk, Krzysztof; Rybicki, Krzysztof A.; Iwanek, Patryk; Wrona, Marcin; Collaboration, The OGLE; Beichman, Charles A.; Bryden, Geoffery; Carey, Sean; Gaudi, B. Scott; Henderson, Calen B.; Team, Spitzer Microlensing

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

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.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D104-A Version Permalink: https://hdl.handle.net/21.11116/0000-0005-D105-9

Genre: Journal Article

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https://ui.adsabs.harvard.edu/abs/2019ApJ...876...81H (Any fulltext) Open Access status unknown

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Han, Cheongho¹, Author
Bond, Ian A.¹, Author
Udalski, Andrzej¹, Author
Gould, Andrew¹, Author
Bozza, Valerio¹, Author
Hirao, Yuki¹, Author
Cassan, Arnaud¹, Author
authors, Leading¹, Author
Albrow, Michael D.¹, Author
Chung, Sun-Ju¹, Author
Hwang, Kyu-Ha¹, Author
Lee, Chung-Uk¹, Author
Ryu, Yoon-Hyun¹, Author
Shin, In-Gu¹, Author
Shvartzvald, Yossi¹, Author
Yee, Jennifer C.¹, Author
Jung, Youn Kil¹, Author
Kim, Doeon¹, Author
Kim, Woong-Tae¹, Author
Cha, Sang-Mok¹, Author
Kim, Dong-Jin¹, AuthorKim, Hyoun-Woo¹, AuthorKim, Seung-Lee¹, AuthorLee, Dong-Joo¹, AuthorLee, Yongseok¹, AuthorPark, Byeong-Gon¹, AuthorPogge, Richard W.¹, AuthorZang, Weicheng¹, AuthorCollaboration, The KMTNet¹, AuthorAbe, Fumio¹, AuthorBarry, Richard¹, AuthorBennett, David P.¹, AuthorBhattacharya, Aparna¹, AuthorDonachie, Martin¹, AuthorFukui, Akihiko¹, AuthorItow, Yoshitaka¹, AuthorKawasaki, Kohei¹, AuthorKondo, Iona¹, AuthorKoshimoto, Naoki¹, AuthorLi, Man Cheung Alex¹, AuthorMatsubara, Yutaka¹, AuthorMuraki, Yasushi¹, AuthorMiyazaki, Shota¹, AuthorNagakane, Masayuki¹, AuthorRanc, Clément¹, AuthorRattenbury, Nicholas J.¹, AuthorSuematsu, Haruno¹, AuthorSullivan, Denis J.¹, AuthorSumi, Takahiro¹, AuthorSuzuki, Daisuke¹, AuthorTristram, Paul J.¹, AuthorYonehara, Atsunori¹, AuthorCollaboration, The MOA¹, AuthorMróz, Przemek¹, AuthorSzymański, Michał K.¹, AuthorSkowron, Jan¹, AuthorPoleski, Radek¹, AuthorSoszyński, Igor¹, AuthorPietrukowicz, Paweł¹, AuthorKozłowski, Szymon¹, AuthorUlaczyk, Krzysztof¹, AuthorRybicki, Krzysztof A.¹, AuthorIwanek, Patryk¹, AuthorWrona, Marcin¹, AuthorCollaboration, The OGLE¹, AuthorBeichman, Charles A.¹, AuthorBryden, Geoffery¹, AuthorCarey, Sean¹, AuthorGaudi, B. Scott¹, AuthorHenderson, Calen B.¹, AuthorTeam, Spitzer Microlensing¹, Author more..

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1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692

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Free keywords: binaries: general gravitational lensing: micro Astrophysics - Solar and Stellar Astrophysics

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 _‚òâ and M ₂ = 0.13 ¬± 0.01 M _‚òâ 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.

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Dates: Date issued: 2019

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Title: The Astrophysical Journal

Source Genre: Journal

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Pages: - Volume / Issue: 876 Sequence Number: - Start / End Page: - Identifier: -