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OGLE-2012-BLG-0950Lb: The First Planet Mass Measurement from Only Microlens Parallax and Lens Flux

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cris.lastimport.scopus2024-02-12T19:48:27Z
dc.abstract.enWe report the discovery of a microlensing planet OGLE-2012-BLG-0950Lb with a planet/host mass ratio of q≃ 2× {10}<SUP>-4</SUP>. A long term distortion detected in both MOA and OGLE light curve can be explained by the microlens parallax due to the Earth’s orbital motion around the Sun. Although the finite source effect is not detected, we obtain the lens flux by the high resolution Keck AO observation. Combining the microlens parallax and the lens flux reveal the nature of the lens: a planet with mass of {M}<SUB>{{p</SUB>}}={35}<SUB>-9</SUB><SUP>+17</SUP>{M}<SUB>\oplus </SUB> is orbiting around an M-dwarf with mass of {M}<SUB>{host</SUB>}={0.56}<SUB>-0.16</SUB><SUP>+0.12</SUP>{M}<SUB>⊙ </SUB> with a planet-host projected separation of {r}<SUB>\perp </SUB>={2.7}<SUB>-0.7</SUB><SUP>+0.6</SUP> au located at {D}<SUB>{{L</SUB>}}={3.0}<SUB>-1.1</SUB><SUP>+0.8</SUP> kpc from us. This is the first mass measurement from only microlens parallax and the lens flux without the finite source effect. In the coming space observation-era with Spitzer, K2, Euclid, and WFIRST, we expect many such events for which we will not be able to measure any finite source effect. This work demonstrates an ability of mass measurements in such events.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKoshimoto, N.
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorBeaulieu, J. P.
dc.contributor.authorSumi, T.
dc.contributor.authorBennett, D. P.
dc.contributor.authorBond, I. A.
dc.contributor.authorRattenbury, N.
dc.contributor.authorFukui, A.
dc.contributor.authorBatista, V.
dc.contributor.authorMarquette, J. B.
dc.contributor.authorBrillant, S.
dc.contributor.authorAbe, F.
dc.contributor.authorAsakura, Y.
dc.contributor.authorBhattacharya, A.
dc.contributor.authorDonachie, M.
dc.contributor.authorFreeman, M.
dc.contributor.authorHirao, Y.
dc.contributor.authorItow, Y.
dc.contributor.authorLi, M. C. A.
dc.contributor.authorLing, C. H.
dc.contributor.authorMasuda, K.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMatsuo, T.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagakane, M.
dc.contributor.authorOhnishi, K.
dc.contributor.authorOyokawa, H.
dc.contributor.authorSaito, To.
dc.contributor.authorSharan, A.
dc.contributor.authorShibai, H.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorSuzuki, D.
dc.contributor.authorTristram, P. J.
dc.contributor.authorYonehara, A.
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorPoleski, Radosław
dc.contributor.authorSkowron, Jan
dc.contributor.authorSoszyński, Igor
dc.contributor.authorSzymański, Michał
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorWyrzykowski, Łukasz
dc.date.accessioned2024-01-25T15:16:04Z
dc.date.available2024-01-25T15:16:04Z
dc.date.copyright2016-07-12
dc.date.issued2017
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume153
dc.identifier.doi10.3847/1538-3881/153/1/1
dc.identifier.issn0004-6256
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114479
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2017AJ....153....1K
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstronomical Journal
dc.relation.pages1
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2012-BLG-0950Lb: The First Planet Mass Measurement from Only Microlens Parallax and Lens Flux
dc.typeJournalArticle
dspace.entity.typePublication