71 citations · 512 across the 22 of their papers we have counts for
23 papers
Evolution and Observable Properties of Rocky Planet Atmospheres
Marie-Luise Steinmeyer, Lena Noack, Philipp Baumeister +9
The atmospheric composition of rocky exoplanets offers an important tool for constraining the properties of the interior of this type of planet, beyond what is possible from measur…
The impact of electron precipitation on Earth's thermospheric NO production and the drag of LEO satellites
M. Scherf, S. Krauss, G. Tsurikov +6
We investigate the response of space weather events on Earth's upper atmosphere over the polar regions by studying their effect on the drag of the CHAMP and GRACE satellites. Incre…
Upper atmosphere dynamics and drivers of volatiles loss from terrestrial-type (exo)planets
Daria Kubyshkina, Michael J. Way, Iannis Dandouras +7
Volatile loss from exoplanetary atmospheres and its possible implications for the longevity of habitable surface conditions is a topic of vigorous debate currently. The vast majori…
Imaging Venus-like Worlds: Spectral, Polarimetric, and UV Diagnostics for the Habitable Worlds Observatory
Stephen R. Kane, Kimberly M. Bott, Kenneth E. Goodis Gordon +15
Understanding planetary habitability requires a comparative approach that explores the divergent evolutionary outcomes of Earth and Venus. The Habitable Worlds Observatory (HWO) wi…
Prediction of sulphate hazes in the lower Venus atmosphere
Peter Woitke, Manuel Scherf, Christiane Helling +8
We study the amount, size distribution and material composition of (sub-)mic aerosol particles in the lower Venus atmosphere < 50 km. Our GGchem phase-equilibrium model predicts me…
Eta-Earth Revisited I: A Formula for Estimating the Maximum Number of Earth-like Habitats
Helmut Lammer, Manuel Scherf, Laurenz Sproß
In this hypothesis article, we discuss the basic requirements of planetary environments where aerobe organisms can grow and survive, including atmospheric limitations of millimeter…
Eta-Earth Revisited II: Deriving a Maximum Number of Earth-like Habitats in the Galactic Disk
Manuel Scherf, Helmut Lammer, Laurenz Sproß
In Lammer et al. 2024, we defined Earth-like Habitats (EH) as rocky planets in the habitable zone of complex life (HZCL) on which Earth-like N-O-dominated atmospheres with…
Synergies between Venus & Exoplanetary Observations
M. J. Way, Colby Ostberg, Bradford J. Foley +9
In this chapter we examine how our knowledge of present day Venus can inform terrestrial exoplanetary science and how exoplanetary science can inform our study of Venus. In a super…
Modification of the radioactive heat budget of Earth-like exoplanets by the loss of primordial atmospheres
N. Erkaev, M. Scherf, O. Herbort +6
The initial abundance of radioactive heat producing isotopes in the interior of a terrestrial planet are important drivers of its thermal evolution and the related tectonics and po…
The long-term evolution of the atmosphere of Venus: processes and feedback mechanisms
Cedric Gillmann, M. J. Way, Guillaume Avice +11
This work reviews the long-term evolution of the atmosphere of Venus, and modulation of its composition by interior-exterior cycling. The formation and evolution of Venus's atmosph…
The Exosphere as a Boundary: Origin and Evolution of Airless Bodies in the Inner Solar System and Beyond Including Planets with Silicate Atmospheres
H. Lammer, M. Scherf, Y. Ito +6
In this review we discuss all the relevant solar/stellar radiation and plasma parameters and processes that act together in the formation and modification of atmospheres and exosph…
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…
Loss and fractionation of noble gas isotopes and moderately volatile elements from planetary embryos and early Venus, Earth and Mars
H. Lammer, M. Scherf, H. Kurokawa +12
Here we discuss the current state of knowledge on how atmospheric escape processes can fractionate noble gas isotopes and moderately volatile rock-forming elements that populate pr…
Nitrogen Atmospheres of the Icy Bodies in the Solar System
M. Scherf, H. Lammer, N. V. Erkaev +3
This brief review will discuss the current knowledge on the origin and evolution of the nitrogen atmospheres of the icy bodies in the solar system, particularly of Titan, Triton an…
Escape and evolution of Titan's N atmosphere constrained by N/N isotope ratios
N. V. Erkaev, M. Scherf, S. E. Thaller +4
We apply a 1D upper atmosphere model to study thermal escape of nitrogen over Titan's history. Significant thermal escape should have occurred very early for solar EUV fluxes 100 t…
Evolution of the Earth's Polar Outflow From Mid-Archean to Present
K. G. Kislyakova, C. P. Johnstone, M. Scherf +5
The development of habitable conditions on Earth is tightly connected to the evolution of its atmosphere which is strongly influenced by atmospheric escape. We investigate the evol…
Geoscience for understanding habitability in the solar system and beyond
Veronique Dehant, Vinciane Debaille, Vera Dobos +15
This paper reviews habitability conditions for a terrestrial planet from the point of view of geosciences. It addresses how interactions between the interior of a planet or a moon…
Virtual European Solar & Planetary Access (VESPA): a Planetary Science Virtual Observatory cornerstone
S. Erard, B. Cecconi, P. Le Sidaner +21
The Europlanet-2020 programme, which ended on Aug 31st, 2019, included an activity called VESPA (Virtual European Solar and Planetary Access), which focused on adapting Virtual Obs…
The Role of N2 as a Geo-Biosignature for the Detection and Characterization of Earth-like Habitats
Helmut Lammer, Laurenz Sproß, John Lee Grenfell +4
Since the Archean, N2 has been a major atmospheric constituent in Earth's atmosphere. Nitrogen is an essential element in the building blocks of life, therefore the geobiological n…