Document Type
Article
Publication Date
2-1-2013
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. © 2013. The American Astronomical Society. All rights reserved..
Publication Source (Journal or Book title)
Astrophysical Journal
Recommended Citation
Gould, A., Yee, J., Bond, I., Udalski, A., Han, C., Jørgensen, U., Greenhill, J., Tsapras, Y., Pinsonneault, M., Bensby, T., Allen, W., Almeida, L., Bos, M., Christie, G., Depoy, D., Dong, S., Gaudi, B., Hung, L., Jablonski, F., Lee, C., McCormick, J., Moorhouse, D., Muñoz, J., Natusch, T., Nola, M., Pogge, R., Skowron, J., Thornley, G., Abe, F., Bennett, D., Botzler, C., Chote, P., & Freeman, M. (2013). MOA-2010-BLG-523: "failed planet" = RS CVn STAR. Astrophysical Journal, 763 (2) https://doi.org/10.1088/0004-637X/763/2/141