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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, M
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.

History

Publication title

Astrophysical Journal

Volume

763

Article number

141

Number

141

Pagination

1-11

ISSN

0004-637X

Department/School

School of Natural Sciences

Publisher

Univ Chicago Press

Place of publication

1427 E 60Th St, Chicago, USA, Il, 60637-2954

Rights statement

Copyright 2013 The American Astronomical Society

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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