71 citations · 512 across the 22 of their papers we have counts for
5 papers · 1 filter
The young Sun's XUV-activity as a constraint for lower CO-limits in the Earth's Archean atmosphere
C. P. Johnstone, H. Lammer, K. G. Kislyakova +2
Despite their importance for determining the evolution of the Earth's atmosphere and surface conditions, the evolutionary histories of the Earth's atmospheric CO abundance duri…
Non-thermal escape of the Martian CO atmosphere over time: constrained by Ar isotopes
H. Lichtenegger, S. Dyadechkin, M. Scherf +5
The ion escape of Mars' CO atmosphere caused by its dissociation products C and O atoms is {simulated} from present time to billion years ago (Ga) by {numerical mode…
Life as the Only Reason for the Existence of N2-O2-Dominated Atmospheres
Laurenz Sproß, Manuel Scherf, Valery I. Shematovich +2
The Earth's N2-dominated atmosphere is a very special feature. Firstly, N2 as main gas is unique on the terrestrial planets in the inner solar system and gives a hint for tectonic…
Formation of Venus, Earth and Mars: Constrained by isotopes
H. Lammer, R. Brasser, A. Johansen +2
We discuss the current state of knowledge of terrestrial planet formation from the aspects of different planet formation models and isotopic data from 182Hf-182W, U-Pb, lithophile-…
Did Mars possess a dense atmosphere during the first ~400 million years?
M. Scherf, H. Lammer
It is not yet entirely clear whether Mars began as a warm and wet planet that evolved towards the present-day cold and dry body or if it always was cold and dry with just some spor…