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OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement

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cris.lastimport.scopus2024-02-12T20:10:44Z
dc.abstract.enWe analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits three distinctive widely separated peaks and we find that the multiple-peak feature provides a very tight constraint on the microlens-parallax effect, enabling us to precisely measure the microlens parallax {π }<SUB>{{E</SUB>}}. All the peaks are densely and continuously covered from high-cadence survey observations using globally located telescopes and the analysis of the peaks leads to the precise measurement of the angular Einstein radius {θ }<SUB>{{E</SUB>}}. From the combination of the measured {π }<SUB>{{E</SUB>}} and {θ }<SUB>{{E</SUB>}}, we determine the physical parameters of the lens. It is found that the lens is a binary composed of two M dwarfs with masses M <SUB>1</SUB> = 0.18 ± 0.01 M <SUB>⊙</SUB> and M <SUB>2</SUB> = 0.16 ± 0.01 M <SUB>⊙</SUB> located at a distance {D}<SUB>{{L</SUB>}}=1.35+/- 0.09 {kpc}. According to the estimated lens mass and distance, the flux from the lens comprises an important fraction, ˜25%, of the blended flux. The bright nature of the lens combined with the high relative lens-source motion, μ = 6.94 ± 0.50 mas yr<SUP>-1</SUP>, suggests that the lens can be directly observed from future high-resolution follow-up observations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSkowron, Jan
dc.contributor.authorSzymański, Michał
dc.contributor.authorSoszyński, Igor
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorJung, Youn Kil
dc.contributor.authorHan, Cheongho
dc.contributor.authorBond, Ian A.
dc.contributor.authorGould, Andrew
dc.contributor.authorauthors, Leading
dc.contributor.authorAlbrow, Michael D.
dc.contributor.authorChung, Sun-Ju
dc.contributor.authorHwang, Kyu-Ha
dc.contributor.authorLee, Chung-Uk
dc.contributor.authorRyu, Yoon-Hyun
dc.contributor.authorShin, In-Gu
dc.contributor.authorShvartzvald, Yossi
dc.contributor.authorYee, Jennifer C.
dc.contributor.authorJee, M. James
dc.contributor.authorKim, Doeon
dc.contributor.authorCha, Sang-Mok
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.authorAbe, Fumio
dc.contributor.authorBarry, Richard
dc.contributor.authorBennett, David P.
dc.contributor.authorBhattacharya, Aparna
dc.contributor.authorDonachie, Martin
dc.contributor.authorFukui, Akihiko
dc.contributor.authorHirao, Yuki
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.authorMróz, Przemysław
dc.contributor.authorPoleski, Radosław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorPawlak, Michał
dc.date.accessioned2024-01-25T15:17:26Z
dc.date.available2024-01-25T15:17:26Z
dc.date.copyright2019-01-19
dc.date.issued2019
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume872
dc.identifier.doi10.3847/1538-4357/AB001F
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/114495
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2019ApJ...872..175J
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages175
dc.rightsOther
dc.sciencecloudnosend
dc.titleOGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement
dc.typeJournalArticle
dspace.entity.typePublication