Showing 2014 · astro-ph.EPShow all

6 papers · 2 filters

astro-ph.EP2014★ 127 cited

Heating efficiency in hydrogen-dominated upper atmospheres

Valery I. Shematovich, Dmitry E. Ionov, Helmut Lammer

Context. The heating efficiency is defined as the ratio of the net local gas-heating rate to the rate of stellar radiative energy absorption. It plays an important role in thermal-…

astro-ph.EP2014★ 17 cited

CoRoT-22 b: a validated 4.9 RE exoplanet in 10-day orbit

C. Moutou, J-M. Almenara, R. F. Diaz +36

The CoRoT satellite has provided high-precision photometric light curves for more than 163,000 stars and found several hundreds of transiting systems compatible with a planetary sc…

astro-ph.EP2014★ 19 cited

Impact inducted surface heating by planetesimals on early Mars

T. I. Maindl, R. Dvorak, H. Lammer +7

We investigate the influence of impacts of large planetesimals and small planetary embryos on the early Martian surface on the hydrodynamic escape of an early steam atmosphere that…

astro-ph.EP2014★ 64 cited

Scientific rationale of Saturn's in situ exploration

O. Mousis, L. N. Fletcher, J. -P. Lebreton +47

Remote sensing observations meet some limitations when used to study the bulk atmospheric composition of the giant planets of our solar system. A remarkable example of the superior…

astro-ph.EP2014★ 74 cited

Stellar wind interaction and pick-up ion escape of the Kepler-11 "super-Earths"

K. G. Kislyakova, C. P. Johnstone, P. Odert +6

We study the interactions between stellar wind and the extended hydrogen-dominated upper atmospheres of planets and the resulting escape of planetary pick-up ions from the 5 "super…

astro-ph.EP2014★ 157 cited

Origin and Loss of nebula-captured hydrogen envelopes from "sub"- to "super-Earths" in the habitable zone of Sun-like stars

H. Lammer, A. Stökl, N. V. Erkaev +6

We investigate the origin and loss of captured hydrogen envelopes from protoplanets between `sub-Earth'-like bodies of 0.1 up to `super-Earths' with 5 in th…