The new age of spotted star research using Kepler and CHARA

With the precise, nearly-continuous photometry from the Kepler satellite and the sub-milliarcsecond resolving capabilities of the CHARA Array, astronomy is entering a new age for the imaging and understanding of stellar magnetic activity. We present first results from our Guest Observer Program, whe...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2013-08, Vol.9 (S302), p.212-215
Main Authors: Roettenbacher, Rachael M., Monnier, John D., Harmon, Robert O., Korhonen, Heidi H.
Format: Article
Language:English
Subjects:
Age
Arrays
Astronomy
Contributed Papers
Differential rotation
Doppler effect
Flares
Inversions
Magnetic fields
Photometry
Stars & galaxies
Surface chemistry
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Summary:With the precise, nearly-continuous photometry from the Kepler satellite and the sub-milliarcsecond resolving capabilities of the CHARA Array, astronomy is entering a new age for the imaging and understanding of stellar magnetic activity. We present first results from our Guest Observer Program, where 180 single-epoch surface image reconstructions of KIC 5110407 have revealed differential rotation and hints of magnetic activity cycles based on both spot and flare variations. Analysis of our larger, full dataset will establish in unprecedented detail how surface magnetic activity correlates with stellar age and spectral type. In addition to Kepler work, we have harnessed the power of the world's largest infrared interferometer to “directly” image the spotted surfaces of a few of the closest RS CVn systems, allowing a comparison of contemporaneous Doppler and light-curve inversion imaging techniques.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921314002105