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MOA-2010-BLG-523: 'FAILED PLANET' = RS CVn STAR

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Gould, A and Yee, JC and Bond, IA and Udalski, A and Han, C and Jorgensen, UG and Greenhill, J and Tsapras, Y and Pinsonneault, MH and Bensby, T and Allen, W and Almeida, LA and Bos, M and Christie, GW and DePoy, DL and Dong, S and Gaudi, BS and Hung, L-W and Jablonski, F and Lee, C-U and McCormick, J and Moorhouse, D and Munoz, JA and Natusch, T and Nola, M and Pogge, RW and Skowron, J and Thornley, G and Abe, F and Bennett, DP and Botzler, CS and Chote, P and Freeman, M and Fukui, A and Furusawa, K and Harris, P and Itow, Y and Ling, CH and Masuda, K and Matsubara, Y and Miyake, N and Ohnishi, K and Rattenbury, NJ and Saito, T and Sullivan, DJ and Sumi, T and Suzuki, D and Sweatman, WL and Tristram, PJ and Wada, K and Yock, PCM and Alsubai, KA and Bozza, V and Browne, P and Burgdorf, MJ and Calchi Novati, S and Dodds, P and Dominik, M and Finet, F and Gerner, T and Hardis, S and Harpsoe, K and Hessman, FV and Hinse, TC and Hundertmark, M and Kains, N and Kerins, E and Liebig, C and Mancini, L and Mathiasen, M and Penny, MT and Proft, S and Rahvar, S and Ricci, D and Sahu, KC and Scarpetta, G and Schafer, S and Schonebeck, F and Snodgrass, C and Southworth, J and Surdej, J and Wambsganss, J and Street, RA and Horne, K and Bramich, DM and Steele, IA and Albrow, MD and Bachelet, E and Batista, V and Beatty, TG and Beaulieu, J-P and Bennett, CS and Bowens-Rubin, R and Brillant, S and Caldwell, JAR and Cassan, A and Cole, AA and Corrales, E and Coutures, C and Dieters, S and Dominis Prester, D and Donatowicz, J and Fouque, P and Henderson, CB and Kubas, D and Marquette, J-B and Martin, R and Menzies, JW and Shappee, B and Williams, A and van Saders, J and Zub, M, MOA-2010-BLG-523: 'FAILED PLANET' = RS CVn STAR, Astrophysical Journal, 763, (2) Article 141. ISSN 0004-637X (2013) [Refereed Article]


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Copyright 2013 The American Astronomical Society

DOI: doi:10.1088/0004-637X/763/2/141

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 ~ 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.

Item Details

Item Type:Refereed Article
Keywords:gravitational lensing: micro – planetary systems – starspots – stars: variables: general
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Galactic Astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Greenhill, J (Dr John Greenhill)
Author:Cole, AA (Dr Andrew Cole)
Author:Dieters, S (Dr Stefan Dieters)
ID Code:88401
Year Published:2013
Web of Science® Times Cited:12
Deposited By:Mathematics and Physics
Deposited On:2014-01-31
Last Modified:2017-11-03
Downloads:0

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