Observing The Super-Earth GJ1214b In The Face Of Stellar Variability

Details Observing The Super-Earth GJ1214b In The Face Of Stellar Variability Observing The Super-Earth GJ1214b In The Face Of Stellar Variability

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734311b&link_type=abstract

American Astronomical Society, AAS Meeting #217, #343.11; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Discovered by the MEarth Survey, GJ1214b is a 2.7 Earth radius, 6.6 Earth mass exoplanet that transits a nearby M dwarf only 13 pc away. The star exhibits a 1% photometric variability, most likely induced by stellar spots, that could potentially complicate follow-up studies of the planet's atmosphere and interior structure. We present the results of new photometric monitoring of GJ1214, with which we estimate the stellar rotation period, place limits on the effects of the spots on observed transmission spectra, and search for additional transiting planets in the system.

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