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Table 1

Parameters used in the present study.

Planets Mmin/M r/r g(m   s-2) Γd   (K   km-1) d (AU) S0   (W   m-2) cp   (J   K-1   kg-1)

Gl 581c 5.06 1.8 15.3 15.3 0.073 955.83 1003
Gl 581d 8.30 2.0 20.3 23.9 0.210 103.09 850

Notes. M is Earth’s mass, r is Earth’s radius, Mmin and r are planets’ minimum mass and radius, respectively. g is surface gravity, Γd is the dry adiabatic lapse rate, d is the mean distance between the star and planets, and S0 is the average stellar flux.

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