MOA-2010-BLG-523 : "Failed Planet" = RS CVn Star
Abstract
The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing light curve near the peak of an A(max) similar to 265 high-magnification microlensing event. The deviations originally seemed consistent with expectations for a planetary companion to the principal lens. We combine long-term photometric monitoring with a previously published high-resolution spectrum taken near peak to demonstrate that this is an RS CVn variable, so that planetary microlensing is not required to explain the light-curve deviations. This is the first spectroscopically confirmed RS CVn star discovered in the Galactic bulge.
Citation
Gould , A , Yee , J C , Bond , I A , Udalski , A , Han , C , Jorgensen , U G , Greenhill , J , Tsapras , Y , Pinsonneault , M H , Bensby , T , Allen , W , Almeida , L A , Bos , M , Christie , G W , DePoy , D L , Dong , S , Gaudi , B S , Hung , L-W , Jablonski , F , Lee , C-U , McCormick , J , Moorhouse , D , Munoz , J A , Natusch , T , Nola , M , Pogge , R W , Skowron , J , Thornley , G , Abe , F , Bennett , D P , Botzler , C S , Chote , P , Freeman , M , Fukui , A , Furusawa , K , Harris , P , Itow , Y , Ling , C H , Masuda , K , Matsubara , Y , Miyake , N , Ohnishi , K , Rattenbury , N J , Saito , T , Sullivan , D J , Sumi , T , Suzuki , D , Sweatman , W L , Tristram , P J , Wada , K , Yock , P C M , Szymanski , M K , Soszynski , I , Kubiak , M , Poleski , R , Ulaczyk , K , Pietrzynski , G , Wyrzykowski , L , Alsubai , K A , Bozza , V , Browne , P , Burgdorf , M J , Calchi Novati , S , Dodds , P , Dominik , M , Finet , F , Gerner , T , Hardis , S , Harpsoe , K , Hessman , F V , Hinse , T C , Hundertmark , M , Kains , N , Kerins , E , Liebig , C , Mancini , L , Mathiasen , M , Penny , M T , Proft , S , Rahvar , S , Ricci , D , Sahu , K C , Scarpetta , G , Schaefer , S , Schoenebeck , F , Snodgrass , C , Southworth , J , Surdej , J , Wambsganss , J , Street , R A , Horne , K , Bramich , D M , Steele , I A , Albrow , M D , Bachelet , E , Batista , V , Beatty , T G , Beaulieu , J-P , Bennett , C S , Bowens-Rubin , R , Brillant , S , Caldwell , J A R , Cassan , A , Cole , A A , Corrales , E , Coutures , C , Dieters , S , Prester , D D , Donatowicz , J , Fouque , P , Henderson , C B , Kubas , D , Marquette , J-B , Martin , R , Menzies , J W , Shappee , B , Williams , A , van Saders , J & Zub , M 2013 , ' MOA-2010-BLG-523 : "Failed Planet" = RS CVn Star ' , Astrophysical Journal , vol. 763 , no. 2 , 141 . https://doi.org/10.1088/0004-637X/763/2/141
Publication
Astrophysical Journal
Status
Peer reviewed
ISSN
0004-637XType
Journal article
Collections
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