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OGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star

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dc.abstract.enWe report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which the light curve exhibits a double-bump anomaly around the peak. We find that the anomaly cannot be fully explained by the binary-lens or binary-source interpretations and its description requires the introduction of an additional lens component. The 3L1S (three lens components and a single source) modeling yields three sets of solutions, in which one set of solutions indicates that the lens is a planetary system in a binary, while the other two sets imply that the lens is a multiplanetary system. By investigating the fits of the individual models to the detailed light curve structure, we find that the multiple-planet solution with planet-to-host mass ratios ˜9.5 × 10<SUP>-3</SUP> and ˜15 × 10<SUP>-3</SUP> are favored over the other solutions. From the Bayesian analysis, we find that the lens is composed of two planets with masses {1.8}<SUB>-1.1</SUB><SUP>+3..4</SUP> {M}<SUB>{{J</SUB>}} and {2.8}<SUB>-1.7</SUB><SUP>+5.1</SUP> {M}<SUB>{{J</SUB>}} around a host with a mass {0.18}<SUB>-0.10</SUB><SUP>+0.33</SUP> {M}<SUB>⊙ </SUB> and located at a distance {7.1}<SUB>-1.5</SUB><SUP>+1.1</SUP> {kpc}. The estimated distance indicates that the lens is the farthest system among the known multiplanetary systems. The projected planet-host separations are {a}<SUB>\perp ,2</SUB>={1.8}<SUB>-1.5</SUB><SUP>+2.1</SUP> {au} ({0.8}<SUB>-0.6</SUB><SUP>+0.9</SUP> {au}) and {a}<SUB>\perp ,3</SUB>={0.8}<SUB>-0.6</SUB><SUP>+0.9</SUP> {au}, where the values of a <SUB>⊥,2</SUB> inside and outside the parenthesis are the separations corresponding to the two degenerate solutions, indicating that both planets are located beyond the snow line of the host, as with the other four multiplanetary systems previously found by microlensing.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSzymański, Michał
dc.contributor.authorSkowron, Jan
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorHan, Cheongho
dc.contributor.authorBennett, David P.
dc.contributor.authorGould, Andrew
dc.contributor.authorBond, Ian A.
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorNikolaus, Kay-Sebastian
dc.contributor.authorHundertmark, Markus
dc.contributor.authorBozza, Valerio
dc.contributor.authorCassan, Arnaud
dc.contributor.authorHirao, Yuki
dc.contributor.authorBachelet, Etienne
dc.contributor.authorFouqué, Pascal
dc.contributor.authorAuthors, Leading
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorHong, Kyeongsoo
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorJung, Youn Kil
dc.contributor.authorCha, Sang-Mok
dc.contributor.authorKim, Doeon
dc.contributor.authorKim, Dong-Jin
dc.contributor.authorKim, Hyoun-Woo
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.authorMróz, Przemysław
dc.contributor.authorPoleski, Radosław
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.authorBhattacharya, Aparna
dc.contributor.authorDonachie, Martin
dc.contributor.authorFukui, Akihiko
dc.contributor.authorItow, Yoshitaka
dc.contributor.authorKawasaki, Kohei
dc.contributor.authorKondo, Iona
dc.contributor.authorKoshimoto, Naoki
dc.contributor.authorLi, Man Cheung Alex
dc.contributor.authorMatsubara, Yutaka
dc.contributor.authorMuraki, Yasushi
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorNagakane, Masayuki
dc.contributor.authorRanc, Clément
dc.contributor.authorRattenbury, Nicholas J.
dc.contributor.authorSuematsu, Haruno
dc.contributor.authorSullivan, Denis J.
dc.contributor.authorSumi, Takahiro
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorTristram, Paul J.
dc.contributor.authorYonehara, Atsunori
dc.contributor.authorMao, Shude
dc.contributor.authorWang, Tianshu
dc.contributor.authorZang, Weicheng
dc.contributor.authorZhu, Wei
dc.contributor.authorPenny, Matthew T.
dc.contributor.authorBeichman, Charles A.
dc.contributor.authorBryden, Geoffery
dc.contributor.authorNovati, Sebastiano Calchi
dc.contributor.authorGaudi, B. Scott
dc.contributor.authorHenderson, Calen B.
dc.contributor.authorJacklin, Savannah
dc.contributor.authorStassun, Keivan G.
dc.date.accessioned2024-01-25T15:42:33Z
dc.date.available2024-01-25T15:42:33Z
dc.date.copyright2019-07-03
dc.date.issued2019
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number3
dc.description.versionORIGINAL_AUTHOR
dc.description.volume158
dc.identifier.doi10.3847/1538-3881/AB2F74
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114527
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2019AJ....158..114H
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages114
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2018-BLG-1011Lb,c: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star
dc.typeJournalArticle
dspace.entity.typePublication