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OGLE-2018-BLG-0799Lb: a q 2.7 × 10<SUP>-3</SUP> planet with Spitzer parallax

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cris.lastimport.scopus2024-02-12T20:52:50Z
dc.abstract.enWe report the discovery and analysis of a planet in the microlensing event OGLE-2018-BLG-0799. The planetary signal was observed by several ground-based telescopes, and the planet-host mass ratio is q = (2.65 ± 0.16) × 10<SUP>-3</SUP>. The ground-based observations yield a constraint on the angular Einstein radius θ<SUB>E</SUB>, and the microlensing parallax vector $oldsymbol{{pi} }_{ m E}$, is strongly constrained by the Spitzer data. However, the 2019 Spitzer baseline data reveal systematics in the Spitzer photometry, so there is ambiguity in the magnitude of the parallax. In our preferred interpretation, a full Bayesian analysis using a Galactic model indicates that the planetary system is composed of an $M_{ m planet} = 0.26_{-0.11}^{+0.22}M_{ m J}$ planet orbiting an $M_{ m host} = 0.093_{-0.038}^{+0.082}~mathrm{M}_{odot }$, at a distance of $D_{ m L} = 3.71_{-1.70}^{+3.24}$ kpc. An alternate interpretation of the data shifts the localization of the minima along the arc-shaped microlens parallax constraints. This, in turn, yields a more massive host with median mass of $0.13 {, mathrm{M}_{odot }}$ at a distance of 6.3 kpc. This analysis demonstrates the robustness of the osculating circles formalism, but shows that further investigation is needed to assess how systematics affect the specific localization of the microlens parallax vector and, consequently, the inferred physical parameters.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSkowron, Jan
dc.contributor.authorDonachie, Martin
dc.contributor.authorTsapras, Yiannis
dc.contributor.authorLee, Dong-Joo
dc.contributor.authorIwanek, Patryk
dc.contributor.authorYang, Hongjing
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorZhu, Wei
dc.contributor.authorMatsubara, Yutaka
dc.contributor.authorHan, Cheongho
dc.contributor.authorBarry, Richard
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorMuraki, Yasushi
dc.contributor.authorGould, Andrew
dc.contributor.authorRanc, Clément
dc.contributor.authorGaudi, B. Scott
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorPogge, Richard W.
dc.contributor.authorCarey, Sean
dc.contributor.authorWrona, Marcin
dc.contributor.authorMao, Shude
dc.contributor.authorHenderson, Calen B.
dc.contributor.authorSuzuki, Daisuke
dc.contributor.authorKim, Seung-Lee
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorPenny, Matthew T.
dc.contributor.authorMaoz, Dan
dc.contributor.authorKim, Dong-Jin
dc.contributor.authorBachelet, Etienne
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorTristram, Paul J.
dc.contributor.authorKim, Hyoun-Woo
dc.contributor.authorJaimes, R. Figuera
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorYamawaki, Tsubasa
dc.contributor.authorLi, Man Cheung Alex
dc.contributor.authorTanaka, Yuzuru
dc.contributor.authorStreet, Rachel A.
dc.contributor.authorYonehara, Atsunori
dc.contributor.authorShoji, Hikaru
dc.contributor.authorMiyazaki, Shota
dc.contributor.authorFujii, Hirosane
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSzymański, Michał
dc.contributor.authorBennett, David P.
dc.contributor.authorRattenbury, Nicholas J.
dc.contributor.authorFukui, Akihiko
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorHundertmark, Markus P. G.
dc.contributor.authorBond, Ian A.
dc.contributor.authorZhang, Xiangyu
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorKondo, Iona
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorAbe, Fumio
dc.contributor.authorBryden, Geoffery
dc.contributor.authorNovati, Sebastiano Calchi
dc.contributor.authorSumi, Takahiro
dc.contributor.authorBeichman, Charles A.
dc.contributor.authorBhattacharya, Aparna
dc.contributor.authorHirao, Yuki
dc.contributor.authorPark, Byeong-Gon
dc.contributor.authorLee, Yongseok
dc.contributor.authorKirikawa, Rintaro
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorKoshimoto, Naoki
dc.contributor.authorJung, Youn Kil
dc.contributor.authorMróz, Przemysław
dc.contributor.authorCha, Sang-Mok
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorItow, Yoshitaka
dc.contributor.authorShin, In-Gu
dc.contributor.authorSatoh, Yuki
dc.contributor.authorSoszyński, Igor
dc.contributor.authorZang, Weicheng
dc.date.accessioned2024-01-25T15:42:25Z
dc.date.available2024-01-25T15:42:25Z
dc.date.copyright2022-07-20
dc.date.issued2022
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number4
dc.description.versionORIGINAL_AUTHOR
dc.description.volume514
dc.identifier.doi10.1093/MNRAS/STAC1631
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114526
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2022MNRAS.514.5952Z
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages5952-5968
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2018-BLG-0799Lb: a q 2.7 × 10<SUP>-3</SUP> planet with Spitzer parallax
dc.typeJournalArticle
dspace.entity.typePublication