Circumstellar dust exists around several hundred main sequence stars. For the youngest
stars, that dust could be a remnant of the protoplanetary disk. Mostly it is inferred to be …

Optical interferometry provides us with a unique opportunity to improve our understanding of
stellar structure and evolution. Through direct observation of rotationally distorted …

Context. PIONIER stands for Precision Integrated-Optics Near-infrared Imaging ExpeRiment.
It combines four 1.8 m Auxilliary Telescopes or four 8m Unit Telescopes of the Very Large …

This paper provides an overview of the PACS photometer flux calibration concept, in
particular for the principal observation mode, the scan map. The absolute flux calibration is …

Debris disks are optically thin, almost gas-free dusty disks observed around a significant
fraction of main-sequence stars older than about 10 Myr. Since the circumstellar dust is short …

This paper confronts a simple analytical model for the steady state evolution of debris disks
due to collisions with Spitzer observations of dust around main-sequence A stars. It is …

We describe calculations for the formation of icy planets and debris disks at 30-150 AU
around 1-3 M⊙ stars. Debris disk formation coincides with the formation of planetary …

We have obtained high-precision interferometric measurements of Vega with the CHARA
Array and FLUOR beam combiner in the K'band at projected baselines between 103 and …

Vega and Fomalhaut are similar in terms of mass, ages, and global debris disk properties;
therefore, they are often referred to as" debris disk twins." We present Spitzer 10–35 μm …

There exists strong circumstantial evidence from their eccentric orbits that most of the known
extra-solar planetary systems are the survivors of violent dynamical instabilities. Here we …