J/AJ/166/116ivo://CDS.VizieR/J/AJ/166/116doi:10.26093/cds/vizier.51660116CDSSatoh Y.K.Koshimoto N.Bennett D.P.Sumi T.Rattenbury N.J.,Suzuki D.Miyazaki S.Bond I.A.Udalski A.Gould A.Bozza V.,Dominik M.Hirao Y.Kondo I.Kirikawa R.Hamada R.Abe F.Barry R.,Bhattacharya A.Fujii H.Fukui A.Fujita K.Ikeno T.,Ishitani Silva S.Itow Y.Matsubara Y.Matsumoto S.Muraki Y.,Niwa K.Okamura A.Olmschenk G.Ranc C.Toda T.Tomoyoshi M.,Tristram P.J.Vandorou A.Yama H.Yamashita K.Mroz P.Poleski R.,Skowron J.Szymanski M.K.Poleski R.Soszynski I.Pietrukowicz P.,Kozlowski S.Ulaczyk K.Rybicki K.A.Iwanek P.Wrona M.Gromadzki M.,Albrow M.D.Chung S.-J.Han C.Hwang K.-H.Kim D.Jung Y.K.,Kim H.W.Ryu Y.-H.Shin I.-G.Shvartzvald Y.Yang H.Yee J.C.,Zang W.Cha S.-M.Kim D.-J.Kim S.-L.Lee C.-U.Lee D.-J.Lee Y.,Park B.-G.Pogge R.W.Jorgensen U.G.Longa-Pena P.Sajadian S.,Skottfelt J.Snodgrass C.Tregloan-Reed J.Bach-Moller N.Burgdorf M.,D'Ago G.Haikala L.Hitchcock J.Hundertmark M.Khalouei E.,Peixinho N.Rahvar S.Southworth J.Spyratos P.Leading Authors,The MOA CollaborationThe OGLE CollaborationThe KMTNet Collaboration,The MiNDSTEp Collaboration2024-11-06T20:17:33Z2024-04-05T09:25:21ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgravitational-lensingvisible-astronomyphotometryWe present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves {chi}2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P~5days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters.2023AJ....166..116Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/116CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/106/773 : Mass-luminosity relation (Henry+, 1993)J/AcA/50/421 : OGLE-II DIA BUL_SC1 field (Wozniak, 2000)J/ApJ/640/1051 : 25pc sample of Sun-like stars (Grether+, 2006)J/A+A/450/681 : Companions to close spectroscopic binaries (Tokovinin+, 2006)J/A+A/497/497 : Physical parameters from JHK flux (Gonzalez-Hernandez+, 2009)J/A+A/504/959 : Amplitudes of single-mode Cepheids (Klagyivik+, 2009)J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/A+A/525/A95 : Search for brown-dwarf companions of stars (Sahlmann+, 2011)J/AcA/61/1 : VI light curves of Galactic Bulge RR Lyrae (Soszynski+, 2011)J/AcA/61/285 : VI light curves of Galactic Bulge Cepheids (Soszynski+, 2011)J/A+A/549/A147 : Abundances of microlensed bulge dwarf stars V. (Bensby+, 2013)J/A+A/587/A64 : Physical properties of giant exoplanets (Santerne+, 2016)J/A+A/605/A79 : TGAS Cepheids and RR Lyrae stars (Gaia Collaboration+, 2017)J/AJ/154/210 : 2015 high-cadence Spitzer microlensing events (Zhu+, 2017)J/A+A/631/A125 : 54 massive companions detected with SOPHIE (Kiefer+, 2019)J/ApJS/244/29 : Microlensing events toward the Galactic bulge (Mroz+, 2019)J/ApJ/900/4 : Abundances & ages of stars in the Milky Way bulge (Sit+, 2020)J/AJ/161/134 : Survey of stellar &planetary comp. within 25pc (Hirsch+, 2021)J/A+A/645/A7 : Determining true mass RV exoplanets with Gaia (Kiefer+, 2021)J/AJ/164/180 : Mass Prod 2021 KMTNet Microlensing Planets. I. (Ryu+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/166/116https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/166/116http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/166/116https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/166/116https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/166/116http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/166/116GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/166/116/fig1Light curve for OGLE-2019-BLG-0825recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTelTelescope identifiermeta.id;instr.telcharHJD[8145/8791] Heliocentric Julian Date; HJD-2450000dtime.epochdoubleindexedFlux[-93288/3.2e6] Observed flux from Telphot.flux.density;em.optdoublee_Flux[4.23/58632] Uncertainty in Fluxstat.error;phot.fluxdouble