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MOA-2010-BLG-523: 'FAILED PLANET' = RS CVn STAR
journal contribution
posted on 2023-05-17, 21:36 authored by Gould, A, Yee, JC, Bond, IA, Udalski, A, Han, C, Jorgensen, UG, Greenhill, J, Tsapras, Y, Pinsonneault, MH, Bensby, T, Allen, W, Almeida, LA, Bos, M, Christie, GW, DePoy, DL, Dong, S, Gaudi, BS, Hung, L-W, Jablonski, F, Lee, C-U, McCormick, J, Moorhouse, D, Munoz, JA, Natusch, T, Nola, M, Pogge, RW, Skowron, J, Thornley, G, Abe, F, Bennett, DP, Botzler, CS, Chote, P, Freeman, M, Fukui, A, Furusawa, K, Harris, P, Itow, Y, Ling, CH, Masuda, K, Matsubara, Y, Miyake, N, Ohnishi, K, Rattenbury, NJ, Saito, T, Sullivan, DJ, Sumi, T, Suzuki, D, Sweatman, WL, Tristram, PJ, Wada, K, Yock, PCM, Alsubai, KA, Bozza, V, Browne, P, Burgdorf, MJ, Calchi Novati, S, Dodds, P, Dominik, M, Finet, F, Gerner, T, Hardis, S, Harpsoe, K, Hessman, FV, Hinse, TC, Hundertmark, M, Kains, N, Kerins, E, Liebig, C, Mancini, L, Mathiasen, M, Penny, MT, Proft, S, Rahvar, S, Ricci, D, Sahu, KC, Scarpetta, G, Schafer, S, Schonebeck, F, Snodgrass, C, Southworth, J, Surdej, J, Wambsganss, J, Street, RA, Horne, K, Bramich, DM, Steele, IA, Albrow, MD, Bachelet, E, Batista, V, Beatty, TG, Beaulieu, J-P, Bennett, CS, Bowens-Rubin, R, Brillant, S, Caldwell, JAR, Cassan, A, Andrew ColeAndrew Cole, Corrales, E, Coutures, C, Dieters, S, Dominis Prester, D, Donatowicz, J, Fouque, P, Henderson, CB, Kubas, D, Marquette, J-B, Martin, R, Menzies, JW, Shappee, B, Williams, A, van Saders, J, Zub, MThe 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.
History
Publication title
Astrophysical JournalVolume
763Article number
141Number
141Pagination
1-11ISSN
0004-637XDepartment/School
School of Natural SciencesPublisher
Univ Chicago PressPlace of publication
1427 E 60Th St, Chicago, USA, Il, 60637-2954Rights statement
Copyright 2013 The American Astronomical SocietyRepository Status
- Restricted