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OGLE-2019-BLG-0468Lb,c: Two microlensing giant planets around a G-type star

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cris.lastimport.scopus2024-02-12T20:27:20Z
dc.abstract.enAims: With the aim of interpreting anomalous lensing events with no suggested models, we conducted a project of reinvestigating microlensing data collected in and before the 2019 season. In this work, we report a multi-planet system, OGLE-2019-BLG-0468L, that was found as a result of this project. Methods: The light curve of the lensing event OGLE-2019-BLG-0468, which consists of three distinctive anomaly features, could not be explained by the usual binary-lens or binary-source interpretations. We find a solution that explains all anomaly features with a triple-lens interpretation, in which the lens is composed of two planets and their host, making the lens the fourth multi-planet system securely found by microlensing. Results: The two planets have masses of ~3.4 M<SUB>J</SUB> and ~10.2 M<SUB>J</SUB>, and they are orbiting around a G-type star with a mass of ~0.9 M<SUB>⊙</SUB> and a distance of ~4.4 kpc. The host of the planets is most likely responsible for the light of the baseline object, although the possibility of the host being a companion to the baseline object cannot be ruled out.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorHan, Cheongho
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorKim, Doeon
dc.contributor.authorZhu, Wei
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorGould, Andrew
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorJung, Youn Kil
dc.contributor.authorKim, Hyoun-Woo
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorZang, Weicheng
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.authorSzymański, Michał
dc.contributor.authorSkowron, Jan
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorWrona, Marcin
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorBuckley, David
dc.contributor.authorDong, Subo
dc.contributor.authorLuo, Ali
dc.date.accessioned2024-01-25T15:43:06Z
dc.date.available2024-01-25T15:43:06Z
dc.date.copyright2022-02-04
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.versionFINAL_PUBLISHED
dc.description.volume658
dc.identifier.doi10.1051/0004-6361/202142327
dc.identifier.issn0004-6361
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114534
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2022A&A...658A..93H
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomy and Astrophysics
dc.relation.pagesA93
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleOGLE-2019-BLG-0468Lb,c: Two microlensing giant planets around a G-type star
dc.typeJournalArticle
dspace.entity.typePublication