MOA-2010-BLG-523: "Failed Planet" = RS CVn Star
Solar and Stellar Astrophysics
2015-06-11 v2 Earth and Planetary Astrophysics
Abstract
The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing lightcurve near the peak of an Amax ~ 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 lightcurve deviations. This is the first spectroscopically confirmed RS CVn star discovered in the Galactic bulge.
Keywords
Cite
@article{arxiv.1210.6045,
title = {MOA-2010-BLG-523: "Failed Planet" = RS CVn Star},
author = {A. Gould and J. C. Yee and I. A. Bond and A. Udalski and C. Han and U. G. Jorgensen and J. Greenhill and Y. Tsapras and M. H. Pinsonneault and T. Bensby and W. Allen and L. A. Almeida and M. Bos and G. W. Christie and D. L. DePoy and Subo Dong and B. S. Gaudi and L. -W. Hung and F. Jablonski and C. -U. Lee and J. McCormick and D. Moorhouse and J. A. Munoz and T. Natusch and M. Nola and R. W. Pogge and J. Skowron and G. Thornley and F. Abe and D. P. Bennett and C. S. Botzler and P. Chote and M. Freeman and A. Fukui and K. Furusawa and P. Harris and Y. Itow and C. H. Ling and K. Masuda and Y. Matsubara and N. Miyake and K. Ohnishi and N. J. Rattenbury and To. Saito and D. J. Sullivan and T. Sumi and D. Suzuki and W. L. Sweatman and P. J. Tristram and K. Wada and P. C. M. Yock and M. K. Szymanski and I. Soszynski and M. Kubiak and R. Poleski and K. Ulaczyk and G. Pietrzynski and L. Wyrzykowski and K. A. Alsubai and V. Bozza and P. Browne and M. J. Burgdorf and S. Calchi Novati and P. Dodds and M. Dominik and F. Finet and T. Gerner and S. Hardis and K. Harpsoe and F. V. Hessman and T. C. Hinse and M. Hundertmark and N. Kains and E. Kerins and C. Liebig and L. Mancini and M. Mathiasen and M. T. Penny and S. Proft and S. Rahvar and D. Ricci and K. C. Sahu and G. Scarpetta and S. Schafer and F. Schonebeck and C. Snodgrass and J. Southworth and J. Surdej and J. Wambsganss and R. A. Street and K. Horne and D. M. Bramich and I. A. Steele and M. D. Albrow and E. Bachelet and V. Batista and T. G. Beatty and J. -P. Beaulieu and C. S. Bennett and R. Bowens-Rubin and S. Brillant and J. A. R. Caldwell and A. Cassan and A. A. Cole and E. Corrales and C. Coutures and S. Dieters and D. Dominis Prester and J. Donatowicz and P. Fouque and C. B. Henderson and D. Kubas and J. -B Marquette and R. Martin and J. W. Menzies and B. Shappee and A. Williams and J. van Saders and M. Zub},
journal= {arXiv preprint arXiv:1210.6045},
year = {2015}
}
Comments
29 pp, 6 figs, submitted to ApJ