A Search For Transits Of GJ 581c And GJ 581e Using MOST Space-based Observations

Astronomy and Astrophysics – Astronomy

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Scientific paper

We have searched MOST space-based photometry for transits of super-Earths GJ 581c and GJ 581e. The nearly continuous observations span 3 orbital periods for each of the two planets. We place upper limits on the radii of both companions. For edge-on orbital inclinations, we rule out a wide range of interior models in the case of GJ 581c, and the lowest density interior models for GJ 581e. We present the results of our analysis as well as an assessment of photometric variability for GJ 581.

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