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A new take on the low-mass brown dwarf companions on wide-orbits in Upper-Scorpius
Simon Petrus, Mickaël Bonnefoy, Gaël Chauvin +10
The Upper-Scorpius association (5-11 Myr) contains a unique population of low-mass (M<30 MJup) brown-dwarfs. The detailed relative characterization of their physical properties (ma…
The Planetary Accretion Shock. II. Grid of Post-Shock Entropies and Radiative Shock Efficiencies for Non-Equilibrium Radiation Transport
Gabriel-Dominique Marleau, Christoph Mordasini, Rolf Kuiper
In the core-accretion formation scenario of gas giants, most of the gas accreting onto a planet is processed through an accretion shock. In this series of papers we study this shoc…
The B-Star Exoplanet Abundance Study: a co-moving 16-25 Mjup companion to the young binary system HIP 79098
Markus Janson, Ruben Asensio-Torres, Damien Andre +13
Wide low-mass substellar companions are known to be very rare among low-mass stars, but appear to become increasingly common with increasing stellar mass. However, B-type stars, wh…
Self-luminous and irradiated exoplanetary atmospheres explored with HELIOS
Matej Malik, Daniel Kitzmann, João M. Mendonça +5
We present new methodological features and physical ingredients included in the 1D radiative transfer code HELIOS, improving the hemispheric two-stream formalism. We conduct a thor…
Exploring the formation by core accretion and the luminosity evolution of directly imaged planets: The case of HIP 65426 b
Gabriel-Dominique Marleau, Gavin A. L. Coleman, Adrien Leleu +1
A low-mass companion to the two-solar mass star HIP65426 has recently been detected by SPHERE at around 100 au from its host. Explaining the presence of super-Jovian planets at lar…