MEarth: Looking for Transiting, Habitable Super-Earths whose Atmospheres Can Be Studied

Astronomy and Astrophysics – Astronomy

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Scientific paper

M dwarfs, the most abundant stars in the Galaxy, offer a unique opportunity for the detection and atmospheric characterization of potentially habitable terrestrial planets. With the MEarth Project, we are using an array of modest telescopes to monitor the brightness of 2,000 nearby, late M dwarfs in a search for transiting, habitable super-Earths. Importantly, the favorable planet-to-star contrast ratios for planets found around M dwarfs would allow us to study the atmospheres of habitable super-Earths using techniques that have already been proven to work for hot Jupiters around Sun-like stars. I overview the current status and future plans of the MEarth Project, as well as recent and ongoing efforts to probe the atmospheric composition of the warm super-Earth GJ1214b - MEarth's first discovered planet.

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