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dc.contributor.authorHan, C.
dc.contributor.authorUdalski, A.
dc.contributor.authorBozza, V.
dc.contributor.authorSzymański, M. K.
dc.contributor.authorSoszyński, I.
dc.contributor.authorSkowron, J.
dc.contributor.authorMróz, P.
dc.contributor.authorPoleski, R.
dc.contributor.authorPietrukowicz, P.
dc.contributor.authorKozłowski, S.
dc.contributor.authorUlaczyk, K.
dc.contributor.authorWyrzykowski, Ł.
dc.contributor.authorNovati, S. Calchi
dc.contributor.authorD’Ago, G.
dc.contributor.authorDominik, M.
dc.contributor.authorHundertmark, M.
dc.contributor.authorJorgensen, U. G.
dc.contributor.authorScarpetta, G.
dc.identifier.citationHan , C , Udalski , A , Bozza , V , Szymański , M K , Soszyński , I , Skowron , J , Mróz , P , Poleski , R , Pietrukowicz , P , Kozłowski , S , Ulaczyk , K , Wyrzykowski , Ł , Novati , S C , D’Ago , G , Dominik , M , Hundertmark , M , Jorgensen , U G & Scarpetta , G 2017 , ' OGLE-2014-BLG-1112LB : a microlensing brown dwarf detected through the channel of a gravitational binary-lens event ' , Astrophysical Journal , vol. 843 , no. 2 , 87 .
dc.identifier.otherPURE: 250686281
dc.identifier.otherPURE UUID: add2c5eb-fc01-4fc8-a924-ae18f30221dd
dc.identifier.otherBibtex: urn:e945cd06485366d1922d19b535208ad9
dc.identifier.otherScopus: 85025112198
dc.identifier.otherWOS: 000405010600010
dc.identifier.otherORCID: /0000-0002-3202-0343/work/75996745
dc.descriptionWork by C. Han was supported by the grant 2017R1A4A1015178 of the National Research Foundation of Korea. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A. Udalski.en
dc.description.abstractDue to the nature of the gravitational field, microlensing, in principle, provides an important tool for detecting faint and even dark brown dwarfs. However, the number of identified brown dwarfs is limited due to the difficulty of the lens mass measurement that is needed to check the substellar nature of the lensing object. In this work, we report a microlensing brown dwarf discovered from an analysis of the gravitational binary-lens event OGLE-2014-BLG-1112. We identify the brown dwarf nature of the lens companion by measuring the lens mass from the detections of both microlens-parallax and finite-source effects. We find that the companion has a mass of (3.03 ± 0.78) × 10-2 M⊙ and it is orbiting a solar-type primary star with a mass of 1.07 ± 0.28 M⊙. The estimated projected separation between the lens components is 9.63 ± 1.33 au and the distance to the lens is 4.84 ± 0.67 kpc. We discuss the usefulness of space-based microlensing observations for detecting brown dwarfs through the channel of binary-lens events.
dc.relation.ispartofAstrophysical Journalen
dc.rights© 2017 The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectBinaries: generalen
dc.subjectBrown dwarfsen
dc.subjectGravitational lensing: microen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleOGLE-2014-BLG-1112LB : a microlensing brown dwarf detected through the channel of a gravitational binary-lens eventen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden

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