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KMT-2019-BLG-1715: Planetary Microlensing Event with Three Lens Masses and Two Source Stars

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dc.abstract.enWe investigate the gravitational microlensing event KMT-2019-BLG-1715, the light curve of which shows two short-term anomalies from a caustic-crossing binary-lensing light curve: one with a large deviation and the other with a small deviation. We identify five pairs of solutions, in which the anomalies are explained by adding an extra lens or source component in addition to the base binary-lens model. We resolve the degeneracies by applying a method in which the measured flux ratio between the first and second source stars is compared with the flux ratio deduced from the ratio of the source radii. Applying this method leaves a single pair of viable solutions, in both of which the major anomaly is generated by a planetary-mass third body of the lens, and the minor anomaly is generated by a faint second source. A Bayesian analysis indicates that the lens comprises three masses: a planet-mass object with ∼2.6 M<SUB>J</SUB> and binary stars of K and M dwarfs lying in the galactic disk. We point out the possibility that the lens is the blend, and this can be verified by conducting high-resolution follow-up imaging for the resolution of the lens from the source.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSzymański, Michał
dc.contributor.authorSkowron, Jan
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorHan, Cheongho
dc.contributor.authorKim, Doeon
dc.contributor.authorJung, Youn Kil
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorBond, Ian A.
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorGould, Andrew
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorKim, Hyoun-Woo
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorZang, Weicheng
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorCha, Sang-Mok
dc.contributor.authorKim, Dong-Jin
dc.contributor.authorKim, Seung-Lee
dc.contributor.authorLee, Dong-Joo
dc.contributor.authorLee, Yongseok
dc.contributor.authorPark, Byeong-Gon
dc.contributor.authorPogge, Richard W.
dc.contributor.authorKim, Chun-Hwey
dc.contributor.authorKim, Woong-Tae
dc.contributor.authorMróz, Przemysław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorWrona, Marcin
dc.contributor.authorAbe, Fumio
dc.contributor.authorBarry, Richard
dc.contributor.authorBennett, David P.
dc.contributor.authorBhattacharya, Aparna
dc.contributor.authorDonachie, Martin
dc.contributor.authorFujii, Hirosane
dc.contributor.authorFukui, Akihiko
dc.contributor.authorItow, Yoshitaka
dc.contributor.authorHirao, Yuki
dc.contributor.authorKirikawa, Rintaro
dc.contributor.authorKondo, Iona
dc.contributor.authorLi, Man Cheung Alex
dc.contributor.authorMatsubara, Yutaka
dc.contributor.authorMuraki, Yasushi
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorRanc, Clément
dc.contributor.authorRattenbury, Nicholas J.
dc.contributor.authorSatoh, Yuki
dc.contributor.authorShoji, Hikaru
dc.contributor.authorSuematsu, Haruno
dc.contributor.authorSumi, Takahiro
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorTanaka, Yuzuru
dc.contributor.authorTristram, Paul J.
dc.contributor.authorYamakawa, Takeharu
dc.contributor.authorYamawaki, Tsubasa
dc.contributor.authorYonehara, Atsunori
dc.date.accessioned2024-01-25T04:48:24Z
dc.date.available2024-01-25T04:48:24Z
dc.date.copyright2021-04-01
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number6
dc.description.versionORIGINAL_AUTHOR
dc.description.volume161
dc.identifier.doi10.3847/1538-3881/ABF4D0
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/110413
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021AJ....161..270H
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages270
dc.rightsOther
dc.sciencecloudnosend
dc.titleKMT-2019-BLG-1715: Planetary Microlensing Event with Three Lens Masses and Two Source Stars
dc.typeJournalArticle
dspace.entity.typePublication