This is the first paper of a series aimed at studying the properties of late-type members of
young stellar kinematic groups. We concentrate our study on classical young moving groups …

We describe a new type of coronagraph, based on the principle of a phase mask as
proposed by Roddier and Roddier a few years ago but using an original mask design found …

We present the results of an extensive high-resolution imaging survey of M-dwarf multiplicity
using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at …

We report the discovery of T dwarf companions to the nearby stars HN Peg (G0 V, 18.4 pc,
τ~ 0.3 Gyr) and HD 3651 (K0 V, 11.1 pc, τ~ 7 Gyr). During an ongoing survey of 5'× 5'fields …

The latest results in the research of forming planetary systems have led several authors to
compile a sample of candidates for searching for planets in the vicinity of the Sun. Young …

We report on a survey devoted to the search of exoplanets around young and nearby stars
carried out with NACO at the VLT. The detection limit for 28 among the best available targets …

The formation timescale and final architecture of exoplanetary systems are closely related to
the properties of the molecular disks from which they form. Observations of the spatial …

Millimeter observations of CO gas in planetesimal belts show a high detection rate around A
stars, but few detections for later type stars. We present the first CO detection in a …

We have used the F160W filter (1.4–1.8 μm) and the coronagraph on the Near-Infrared
Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to …

During an imaging survey of the Chamaeleon I star-forming region with the Advanced
Camera for Surveys aboard the Hubble Space Telescope, we have discovered a candidate …