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- Centre National de la Recherche ScientifiqueFR225 papers
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7 papers · 2 filters
Accretion of a giant planet onto a white dwarf
Boris T. Gaensicke, Matthias R. Schreiber, Odette Toloza +3
The detection of a dust disc around G29-38 and transits from debris orbiting WD1145+017 confirmed that the photospheric trace metals found in many white dwarfs arise from the accre…
Revisiting the cosmic-ray induced Venusian radiation dose in the context of habitability
Konstantin Herbst, Saša Banjac, Dimitra Atri +1
The Atmospheric Radiation Interaction Simulator (AtRIS) was used to model the altitude-dependent Venusian absorbed dose and the Venusian dose equivalent. For the first time, we mod…
A New Model Suite to Determine the Influence of Cosmic Rays on (Exo)planetary Atmospheric Biosignatures -- Validation based on Modern Earth
Konstantin Herbst, John Lee Grenfell, Miriam Sinnhuber +8
The first opportunity to detect indications for life outside the Solar System may be provided already within the next decade with upcoming missions such as the James Webb Space Tel…
Interpretation and diversity of exoplanetary material orbiting white dwarfs
Andrew Swan, Jay Farihi, Detlev Koester +5
Nine metal-polluted white dwarfs are observed with medium-resolution optical spectroscopy,where photospheric abundances are determined and interpreted through comparison against so…
Constraining the detectability of water ice in debris disks
Minjae Kim, Sebastian Wolf, Alexey Potapov +2
Water ice is important for the evolution and preservation of life. Identifying the distribution of water ice in debris disks is therefore of great interest in the field of astrobio…
The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star
M. Zechmeister, S. Dreizler, I. Ribas +182
Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little…