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- Centre National de la Recherche ScientifiqueFR225 papers
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7 papers · 2 filters
Dependence of the Martian radiation environment on atmospheric depth: Modeling and measurement
Jingnan Guo, Tony C. Slaba, Cary Zeitlin +9
The energetic particle environment on the Martian surface is influenced by solar and heliospheric modulation and changes in the local atmospheric pressure (or column depth). The Ra…
HD 169142 in the eyes of ZIMPOL/SPHERE
G. H. -M. Bertrang, H. Avenhaus, S. Casassus +5
We present new data of the protoplanetary disc surrounding the Herbig Ae/Be star HD 169142 obtained in the very broad-band (VBB) with the Zurich imaging polarimeter (ZIMPOL), a sub…
Micrometer-Sized Water Ice Particles for Planetary Science Experiments: Influence of Surface Structure on Collisional Properties
Sabrina Gärtner, Bastian Gundlach, Thomas F. Headen +7
Models and observations suggest that ice-particle aggregation at and beyond the snowline dominates the earliest stages of planet-formation, which therefore is subject to many labor…
The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems
T. Trifonov, M. Kürster, M. Zechmeister +166
Context: The main goal of the CARMENES survey is to find Earth-mass planets around nearby M-dwarf stars. Seven M-dwarfs included in the CARMENES sample had been observed before wit…
A generalized approach to model the spectra and radiation dose rate of solar particle events on the surface of Mars
Jingnan Guo, Cary Zeitlin, Robert F. Wimmer-Schweingruber +6
For future human missions to Mars, it is important to study the surface radiation environment during extreme and elevated conditions. In the long term, it is mainly Galactic Cosmic…
Collisions and drag in debris discs with eccentric parent belts
T. Löhne, A. V. Krivov, F. Kirchschlager +2
Context: High-resolution images of circumstellar debris discs reveal off-centred rings that indicate past or ongoing perturbation, possibly caused by secular gravitational interact…