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OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event

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dc.abstract.enWe present the analysis of the binary-microlensing event OGLE-2014-BLG-0289. The event light curve exhibits five very unusual peaks, four of which were produced by caustic crossings and the other by a cusp approach. It is found that the quintuple-peak features of the light curve provide tight constraints on the source trajectory, enabling us to precisely and accurately measure the microlensing parallax {π }<SUB>{{E</SUB>}}. Furthermore, the three resolved caustics allow us to measure the angular Einstein radius {θ }<SUB>{{E</SUB>}}. From the combination of {π }<SUB>{{E</SUB>}} and {θ }<SUB>{{E</SUB>}}, the physical lens parameters are uniquely determined. It is found that the lens is a binary composed of two M dwarfs with masses {M}<SUB>1</SUB>=0.52+/- 0.04 {M}<SUB>⊙ </SUB> and {M}<SUB>2</SUB>=0.42+/- 0.03 {M}<SUB>⊙ </SUB> separated in projection by {a}<SUB>\perp </SUB>=6.4+/- 0.5 {au}. The lens is located in the disk with a distance of {D}<SUB>{{L</SUB>}}=3.3+/- 0.3 {kpc}. The reason for the absence of a lensing signal in the Spitzer data is that the time of observation corresponds to the flat region of the light curve.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSkowron, Jan
dc.contributor.authorWyrzykowski, Łukasz
dc.contributor.authorSzymański, Michał
dc.contributor.authorSoszyński, Igor
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorHan, C.
dc.contributor.authorBozza, V.
dc.contributor.authorGould, A.
dc.contributor.authorBond, I. A.
dc.contributor.authorMróz, Przemysław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorPoleski, Radosław
dc.contributor.authorAbe, F.
dc.contributor.authorBarry, R.
dc.contributor.authorBennett, D. P.
dc.contributor.authorBhattacharya, A.
dc.contributor.authorDonachie, M.
dc.contributor.authorEvans, P.
dc.contributor.authorFukui, A.
dc.contributor.authorHirao, Y.
dc.contributor.authorItow, Y.
dc.contributor.authorKawasaki, K.
dc.contributor.authorKoshimoto, N.
dc.contributor.authorLi, M. C. A.
dc.contributor.authorLing, C. H.
dc.contributor.authorMasuda, K.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMiyazaki, S.
dc.contributor.authorMunakata, H.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagakane, M.
dc.contributor.authorOhnishi, K.
dc.contributor.authorRanc, C.
dc.contributor.authorRattenbury, N.
dc.contributor.authorSaito, T.
dc.contributor.authorSharan, A.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorSumi, T.
dc.contributor.authorSuzuki, D.
dc.contributor.authorTristram, P. J.
dc.contributor.authorYamada, T.
dc.contributor.authorYonehara, A.
dc.contributor.authorStreet, R. A.
dc.contributor.authorTsapras, Y.
dc.contributor.authorBachelet, E.
dc.contributor.authorBramich, D. M.
dc.contributor.authorDÁgo, G.
dc.contributor.authorDominik, M.
dc.contributor.authorJaimes, R. Figuera
dc.contributor.authorHorne, K.
dc.contributor.authorHundertmark, M.
dc.contributor.authorKains, N.
dc.contributor.authorMenzies, J.
dc.contributor.authorSchmidt, R.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorSteele, I. A.
dc.contributor.authorWambsganss, J.
dc.contributor.authorPogge, R. W.
dc.contributor.authorJung, Y. K.
dc.contributor.authorShin, I. -G.
dc.contributor.authorYee, J. C.
dc.contributor.authorKim, W. -T.
dc.contributor.authorBeichman, C.
dc.contributor.authorCarey, S.
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorZhu, W.
dc.date.accessioned2024-01-25T15:16:31Z
dc.date.available2024-01-25T15:16:31Z
dc.date.copyright2018-01-16
dc.date.issued2018
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume853
dc.identifier.doi10.3847/1538-4357/AAA295
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114483
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2018ApJ...853...70U
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages70
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event
dc.typeJournalArticle
dspace.entity.typePublication