5 papers · 1 filter
A near-infrared interferometric survey of debris disc stars. II. CHARA/FLUOR observations of six early-type dwarfs
O. Absil, E. Di Folco, A. Merand +15
High-precision interferometric observations of six early-type main sequence stars known to harbour cold debris discs have been obtained in the near-infrared K band with the FLUOR i…
A near-infrared interferometric survey of debris disk stars. I. Probing the hot dust content around epsilon Eridani and tau Ceti with CHARA/FLUOR
E. Di Folco, O. Absil, J. -C. Augereau +11
We probed the first 3AU around tau Ceti and epsilon Eridani with the CHARA array (Mt Wilson, USA) in order to gauge the 2micron excess flux emanating from possible hot dust grains…
Dynamics of Exozodiacal Clouds
M. Kuchner, C. Stark, O. Absil +2
The inner Solar System contains a cloud of small (1-100 micron) dust grains created when small bodies-asteroids, comets, and Kuiper belt objects-collide and outgas. This dust cloud…
Upper limit on the gas density in the Beta-Pictoris system: On the effect of gas drag on the dust dynamics
P. Thebault, J. -C Augereau
We investigate in this paper the effect of gas drag on the dynamics of the dust particles in the edge-on Beta-Pictoris disc in order to derive an upper limit on the mass of gas in…
Ground-based near-infrared imaging of the HD141569 circumstellar disk
A. Boccaletti, J. C. Augereau, F. Marchis +1
We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carri…