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OGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star

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cris.lastimport.scopus2024-02-12T20:07:03Z
dc.abstract.enWe present the analysis of the microlensing event OGLE-2018-BLG-1428, which has a short-duration (∼1 d) caustic-crossing anomaly. The event was caused by a planetary lens system with planet/host mass ratio q = 1.7 × 10<SUP>-3</SUP>. Because of the detection of the caustic-crossing anomaly, the finite source effect was well measured, but the microlens parallax was not constrained due to the relatively short time-scale (t<SUB>E</SUB> = 24 d). From a Bayesian analysis, we find that the host star is a dwarf star $M_{\rm host}=0.43^{+0.33}_{-0.22} \ \mathrm{M}_{\odot }$ at a distance $D_{\rm L}=6.22^{+1.03}_{-1.51}\ {\rm kpc}$ and the planet is a Jovian-mass planet $M_{\rm p}=0.77^{+0.77}_{-0.53} \ M_{\rm J}$ with a projected separation $a_{\perp }=3.30^{+0.59}_{-0.83}\ {\rm au}$ . The planet orbits beyond the snow line of the host star. Considering the relative lens-source proper motion of $\mu _{\rm rel} = 5.58 \pm 0.38\ \rm mas\ yr^{-1}$ , the lens can be resolved by adaptive optics with a 30 m telescope in the future.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKim, Yun Hak
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorGould, Andrew
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorJung, Youn Kil
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorHan, Cheongho
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, Hyoun-Woo
dc.contributor.authorKim, Seung-Lee
dc.contributor.authorLee, Chung-Uk
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.authorWrona, Marcin
dc.contributor.authorIwanek, Patryk
dc.contributor.authorSzymański, Michał
dc.contributor.authorSkowron, Jan
dc.contributor.authorSoszyński, Igor
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorRybicki, Krzysztof
dc.date.accessioned2024-01-25T15:42:51Z
dc.date.available2024-01-25T15:42:51Z
dc.date.copyright2021-02-23
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume503
dc.identifier.doi10.1093/MNRAS/STAB534
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114530
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021MNRAS.503.2706K
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages2706-2712
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2018-BLG-1428Lb: a Jupiter-mass planet beyond the snow line of a dwarf star
dc.typeJournalArticle
dspace.entity.typePublication