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10 papers · 2 filters
The HARPS search for southern extra-solar planets XXXVI: Five new long-period giant planets and a system update
C. Moutou, G. Lo Curto, M. Mayor +10
We describe radial-velocity time series obtained by HARPS on the 3.60 m telescope in La Silla (ESO, Chile) over ten years and report the discovery of five new giant exoplanets in d…
How to link the relative abundances of gas species in coma of comets to their initial chemical composition ?
Ulysse Marboeuf, Bernard Schmitt
The chemical composition of comets is frequently assumed to be directly provided by the observations of the abundances of volatile molecules in the coma. The present work aims to d…
Planetesimal fragmentation and giant planet formation: the role of planet migration
O. M. Guilera, D. Swoboda, Y. Alibert +3
In the standard model of core accretion, the cores of the giant planets form by the accretion of planetesimals. In this scenario, the evolution of the planetesimal population plays…
High Resolution Transmission Spectroscopy as a Diagnostic for Jovian Exoplanet Atmospheres: Constraints from Theoretical Models
Eliza M. -R. Kempton, Rosalba Perna, Kevin Heng
We present high resolution transmission spectra of giant planet atmospheres from a coupled 3-D atmospheric dynamics and transmission spectrum model that includes Doppler shifts whi…
From planetesimals to planets: volatile molecules
Ulysse Marboeuf, Amaury Thiabaud, Yann Alibert +2
Solar and extrasolar planets are the subject of numerous studies aiming to determine their chemical composition and internal structure. In the case of extrasolar planets, the compo…
From stellar nebula to planetesimals
Ulysse Marboeuf, Amaury Thiabaud, Yann Alibert +2
Solar and extrasolar comets and extrasolar planets are the subject of numerous studies in order to determine their chemical composition and internal structure. In the case of plane…