Quarter 3 Kepler light curve for KIC 8416220 at Planet Hunters. This is a type M red subgiant star.
Here is comment by Kian Jek:
"As NHB has pointed out, this is a very unusual star because if its
spectral type is correct (and the MAST entry seems incontrovertible, g-r
and other measured bandpass magnitudes seem to agree that this is a
Type M red subgiant), then it shouldn't be pulsating, and should not
have multiple periods. A quick periodogram shows 2 dominant periods:
More information here.
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