Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime
interest to understand the physical and chemical conditions under which planet formation …

Newly forming protoplanets are expected to create cavities and substructures in young, gas-
rich protoplanetary disks,–, but they are difficult to detect as they could be confused with disk …

Context. The observation of planets in their formation stage is a crucial but very challenging
step in understanding when, how, and where planets form. PDS 70 is a young pre-main …

Context. The wind-driven halo is a feature that is observed in images that were delivered by
the latest generation of ground-based instruments that are equipped with an extreme …

High-contrast adaptive optics (AO) imaging is a powerful technique to probe the
architectures of planetary systems from the outside-in and survey the atmospheres of self …

Aims. Using the direct-imaging technique, we searched for low-mass companions around
the star AF Lep, which presents a significant proper-motion anomaly (PMa) signal obtained …

We present K-band interferometric observations of the PDS 70 protoplanets along with their
host star using VLTI/GRAVITY. We obtained K-band spectra and 100 μas precision …

Aims. The SHINE program is a high-contrast near-infrared survey of 600 young, nearby stars
aimed at searching for and characterizing new planetary systems using VLT/SPHERE's …

Observations of circumstellar environments that look for the direct signal of exoplanets and
the scattered light from disks have significant instrumental implications. In the past 15 years …

The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a
widely diverse sample that challenges the current formation models, while highlighting the …