Liquid Water Oceans on Super Earths

Details Liquid Water Oceans on Super Earths Liquid Water Oceans on Super Earths

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1803r&link_type=abstract

American Astronomical Society, ESS meeting #2, #18.03

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a practical method to assess whether a transiting planet could have a liquid water ocean. We focus on super Earth planets with voluminous gas envelopes (of which GJ 1214b is the exemplar). Equilibrium temperature alone is insufficient to determine whether a planet could have surface liquid water. We model energy transport through planet envelopes to quantify the range of physically plausible, steady state, interior pressure-temperature profiles. We then identify scenarios for which the profile encounters conditions where water is in the liquid phase. Our model constrains the combinations of planet parameters (mass, radius, equilibrium temperature, intrinsic luminosity) conducive to liquid water oceans.

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