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dc.contributor.authorStreet, R. A.
dc.contributor.authorChoi, J. -Y.
dc.contributor.authorTsapras, Y.
dc.contributor.authorHan, C.
dc.contributor.authorFurusawa, K.
dc.contributor.authorHundertmark, M.
dc.contributor.authorGould, A.
dc.contributor.authorSumi, T.
dc.contributor.authorBond, I. A.
dc.contributor.authorWouters, D.
dc.contributor.authorZellem, R.
dc.contributor.authorUdalski, A.
dc.contributor.authorSnodgrass, C.
dc.contributor.authorHorne, K.
dc.contributor.authorDominik, M.
dc.contributor.authorBrowne, P.
dc.contributor.authorKains, N.
dc.contributor.authorBramich, D. M.
dc.contributor.authorBajek, D.
dc.contributor.authorSteele, I. A.
dc.contributor.authorIpatov, S.
dc.contributor.authorAbe, F.
dc.contributor.authorBennett, D. P.
dc.contributor.authorBotzler, C. S.
dc.contributor.authorChote, P.
dc.contributor.authorFreeman, M.
dc.contributor.authorFukui, A.
dc.contributor.authorHarris, P.
dc.contributor.authorItow, Y.
dc.contributor.authorLing, C. H.
dc.contributor.authorMasuda, K.
dc.contributor.authorMatsubara, Y.
dc.contributor.authorMiyake, N.
dc.contributor.authorMuraki, Y.
dc.contributor.authorNagayama, T.
dc.contributor.authorNishimaya, S.
dc.contributor.authorOhnishi, K.
dc.contributor.authorRattenbury, N.
dc.contributor.authorSaito, To.
dc.contributor.authorSullivan, D. J.
dc.contributor.authorSuzuki, D.
dc.contributor.authorSweatman, W. L.
dc.contributor.authorTristram, P. J.
dc.contributor.authorWada, K.
dc.contributor.authorYock, P. C. M.
dc.contributor.authorSzymanski, M. K.
dc.contributor.authorKubiak, M.
dc.contributor.authorPietrzynski, G.
dc.contributor.authorSoszynski, I.
dc.contributor.authorPoleski, R.
dc.contributor.authorUlaczyk, K.
dc.contributor.authorWyrzykowski, L.
dc.contributor.authorYee, J.
dc.contributor.authorDong, S.
dc.contributor.authorShin, I. -G.
dc.contributor.authorLee, C. -U.
dc.contributor.authorSkowron, J.
dc.contributor.authorAndrade De Almeida, L.
dc.contributor.authorDePoy, D. L.
dc.contributor.authorGaudi, B. S.
dc.contributor.authorHung, L. -W.
dc.contributor.authorJablonski, F.
dc.contributor.authorKaspi, S.
dc.contributor.authorKlein, N.
dc.contributor.authorHwang, K. -H.
dc.contributor.authorKoo, J. -R.
dc.contributor.authorMaoz, D.
dc.contributor.authorMunoz, J. A.
dc.contributor.authorPogge, R. W.
dc.contributor.authorPolishhook, D.
dc.contributor.authorShporer, A.
dc.contributor.authorMcCormick, J.
dc.contributor.authorChristie, G.
dc.contributor.authorNatusch, T.
dc.contributor.authorAllen, B.
dc.contributor.authorDrummond, J.
dc.contributor.authorMoorhouse, D.
dc.contributor.authorThornley, G.
dc.contributor.authorKnowler, M.
dc.contributor.authorBos, M.
dc.contributor.authorBolt, G.
dc.contributor.authorBeaulieu, J. -P.
dc.contributor.authorAlbrow, M. D.
dc.contributor.authorBatista, V.
dc.contributor.authorBrillant, S.
dc.contributor.authorCaldwell, J. A. R.
dc.contributor.authorCassan, A.
dc.contributor.authorCole, A.
dc.contributor.authorCorrales, E.
dc.contributor.authorCoutures, Ch.
dc.contributor.authorDieters, S.
dc.contributor.authorPrester, D. Dominis
dc.contributor.authorDonatowicz, J.
dc.contributor.authorFouque, P.
dc.contributor.authorBachelet, E.
dc.contributor.authorGreenhill, J.
dc.contributor.authorKane, S. R.
dc.contributor.authorKubas, D.
dc.contributor.authorMarquette, J. -B.
dc.contributor.authorMartin, R.
dc.contributor.authorMenzies, J.
dc.contributor.authorPollard, K. R.
dc.contributor.authorSahu, K. C.
dc.contributor.authorWambsganss, J.
dc.contributor.authorWilliams, A.
dc.contributor.authorZub, M.
dc.contributor.authorAlsubai, K. A.
dc.contributor.authorBozza, V.
dc.contributor.authorBurgdorf, M. J.
dc.contributor.authorCalchi Novati, S.
dc.contributor.authorDodds, P.
dc.contributor.authorDreizler, S.
dc.contributor.authorFinet, F.
dc.contributor.authorGerner, T.
dc.contributor.authorHardis, S.
dc.contributor.authorHarpsoe, K.
dc.contributor.authorHessman, F.
dc.contributor.authorHinse, T. C.
dc.contributor.authorJorgensen, U. G.
dc.contributor.authorKerins, E.
dc.contributor.authorLiebig, C.
dc.contributor.authorMancini, L.
dc.contributor.authorMathiasen, M.
dc.contributor.authorPenny, M. T.
dc.contributor.authorProft, S.
dc.contributor.authorRahvar, S.
dc.contributor.authorRicci, D.
dc.contributor.authorScarpetta, G.
dc.contributor.authorSchaefer, S.
dc.contributor.authorSchoenebeck, F.
dc.contributor.authorSouthworth, J.
dc.contributor.authorSurdej, J.
dc.date.accessioned2014-08-18T16:01:06Z
dc.date.available2014-08-18T16:01:06Z
dc.date.issued2013-01-20
dc.identifier.citationStreet , R A , Choi , J -Y , Tsapras , Y , Han , C , Furusawa , K , Hundertmark , M , Gould , A , Sumi , T , Bond , I A , Wouters , D , Zellem , R , Udalski , A , Snodgrass , C , Horne , K , Dominik , M , Browne , P , Kains , N , Bramich , D M , Bajek , D , Steele , I A , Ipatov , S , Abe , F , Bennett , D P , Botzler , C S , Chote , P , Freeman , M , Fukui , A , Harris , P , Itow , Y , Ling , C H , Masuda , K , Matsubara , Y , Miyake , N , Muraki , Y , Nagayama , T , Nishimaya , S , Ohnishi , K , Rattenbury , N , Saito , T , Sullivan , D J , Suzuki , D , Sweatman , W L , Tristram , P J , Wada , K , Yock , P C M , Szymanski , M K , Kubiak , M , Pietrzynski , G , Soszynski , I , Poleski , R , Ulaczyk , K , Wyrzykowski , L , Yee , J , Dong , S , Shin , I -G , Lee , C -U , Skowron , J , Andrade De Almeida , L , DePoy , D L , Gaudi , B S , Hung , L -W , Jablonski , F , Kaspi , S , Klein , N , Hwang , K -H , Koo , J -R , Maoz , D , Munoz , J A , Pogge , R W , Polishhook , D , Shporer , A , McCormick , J , Christie , G , Natusch , T , Allen , B , Drummond , J , Moorhouse , D , Thornley , G , Knowler , M , Bos , M , Bolt , G , Beaulieu , J -P , Albrow , M D , Batista , V , Brillant , S , Caldwell , J A R , Cassan , A , Cole , A , Corrales , E , Coutures , C , Dieters , S , Prester , D D , Donatowicz , J , Fouque , P , Bachelet , E , Greenhill , J , Kane , S R , Kubas , D , Marquette , J -B , Martin , R , Menzies , J , Pollard , K R , Sahu , K C , Wambsganss , J , Williams , A , Zub , M , Alsubai , K A , Bozza , V , Burgdorf , M J , Calchi Novati , S , Dodds , P , Dreizler , S , Finet , F , Gerner , T , Hardis , S , Harpsoe , K , Hessman , F , Hinse , T C , Jorgensen , U G , Kerins , E , Liebig , C , Mancini , L , Mathiasen , M , Penny , M T , Proft , S , Rahvar , S , Ricci , D , Scarpetta , G , Schaefer , S , Schoenebeck , F , Southworth , J & Surdej , J 2013 , ' MOA-2010-BLG-073L : An M-Dwarf with a Substellar Companion at the Planet/Brown Dwarf Boundary ' , Astrophysical Journal , vol. 763 , no. 1 , 67 . https://doi.org/10.1088/0004-637X/763/1/67en
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 79147052
dc.identifier.otherPURE UUID: 4c94a11c-14d5-423a-a2ec-c7350c588071
dc.identifier.otherWOS: 000313456700067
dc.identifier.otherScopus: 84872239600
dc.identifier.otherORCID: /0000-0002-3202-0343/work/75996729
dc.identifier.urihttp://hdl.handle.net/10023/5192
dc.description.abstractWe present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010 March 18. This event was remarkable because the source was previously known to be photometrically variable. Analyzing the pre-event source light curve, we demonstrate that it is an irregular variable over timescales >200 days. Its dereddened color, (V - I)(S),(0), is 1.221 +/- 0.051 mag, and from our lens model we derive a source radius of 14.7 +/- 1.3 R-circle dot, suggesting that it is a red giant star. We initially explored a number of purely microlensing models for the event but found a residual gradient in the data taken prior to and after the event. This is likely to be due to the variability of the source rather than part of the lensing event, so we incorporated a slope parameter in our model in order to derive the true parameters of the lensing system. We find that the lensing system has a mass ratio of q = 0.0654 +/- 0.0006. The Einstein crossing time of the event, t(E) = 44.3 +/- 0.1 days, was sufficiently long that the light curve exhibited parallax effects. In addition, the source trajectory relative to the large caustic structure allowed the orbital motion of the lens system to be detected. Combining the parallax with the Einstein radius, we were able to derive the distance to the lens, D-L = 2.8 +/- 0.4 kpc, and the masses of the lensing objects. The primary of the lens is an M-dwarf with M-L,M-1 = 0.16 +/- 0.03 M-circle dot, while the companion has M-L,M-2 = 11.0 +/- 2.0 M-J, putting it in the boundary zone between planets and brown dwarfs.
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofAstrophysical Journalen
dc.rights© 2013. The American Astronomical Society. All rights reserved.en
dc.subjectBrown dwarfsen
dc.subjectGravitational lensing: microen
dc.subjectPlanetary systemsen
dc.subjectPlanets and satellites: formationen
dc.subjectPlanets and satellites: generalen
dc.subjectTechniques: photometricen
dc.subjectGravitational lensing experimenten
dc.subjectDifference image-analysisen
dc.subjectGas giant planetsen
dc.subjectMicrolensing eventsen
dc.subjectGalactic bulgeen
dc.subjectVariable-starsen
dc.subjectMinimum massen
dc.subjectVariabilityen
dc.subjectEvolutionen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleMOA-2010-BLG-073L : An M-Dwarf with a Substellar Companion at the Planet/Brown Dwarf Boundaryen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1088/0004-637X/763/1/67
dc.description.statusPeer revieweden


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