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5 papers · 2 filters
An icy Kuiper-Belt around the young solar-type star HD 181327
J. Lebreton, J. -C. Augereau, W. -F. Thi +18
HD 181327 is a young F5/F6V star belonging to the Beta Pictoris moving group (12 Myr). It harbors an optically thin belt of circumstellar material at 90 AU. We aim to study the dus…
EChO - Exoplanet Characterisation Observatory
G. Tinetti, J. P. Beaulieu, T. Henning +131
A dedicated mission to investigate exoplanetary atmospheres represents a major milestone in our quest to understand our place in the universe by placing our Solar System in context…
The mass function of IC4665 revisited by the UKIDSS Galactic Clusters Survey
N. Lodieu, W. -J. de Wit, G. Carraro +3
Knowledge of the mass function in open clusters constitutes one way to constrain the formation of low-mass stars and brown dwarfs as does the knowledge of the frequency of multiple…
The influence of non-isotropic scattering of thermal radiation on spectra of brown dwarfs and hot exoplanets
R. J. de Kok, Ch. Helling, D. M. Stam +2
(abridged) We calculate near-infrared thermal emission spectra using a doubling-adding radiative transfer code, which includes scattering by clouds and haze. Initial temperature pr…
The unusual protoplanetary disk around the T Tauri star ET Cha
P. Woitke, B. Riaz, G. Duchene +15
We present new continuum and line observations, along with modelling, of the faint (6-8) Myr old T Tauri star ET Cha belonging to the eta Chamaeleontis cluster. We have acquired HE…