Thomas Bensby
Senior lecturer
MOA-2010-BLG-523:" Failed Planet"= RS CVn Star
Author
Summary, in English
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) similar to 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.
Department/s
- Lund Observatory - Has been reorganised
Publishing year
2013
Language
English
Publication/Series
Astrophysical Journal
Volume
763
Issue
2
Links
Document type
Journal article
Publisher
American Astronomical Society
Topic
- Astronomy, Astrophysics and Cosmology
Keywords
- gravitational lensing: micro
- planetary systems
- starspots
- stars:
- variables: general
Status
Published
ISBN/ISSN/Other
- ISSN: 0004-637X