Adaptive optics is a prime example of how progress in observational astronomy can be
driven by technological developments. At many observatories it is now considered to be part …

Over the last two decades, several thousand exoplanets have been identified, and their
study has become a high scientific priority. Direct imaging of nearby exoplanets and the …

Direct images of protoplanets embedded in disks around infant stars provide the key to
understanding the formation of gas giant planets such as Jupiter. Using the Subaru …

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 …

We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager
Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; …

We present the re-detection of a compact source in the face-on protoplanetary disc
surrounding HD 169142, using VLT/SPHERE data in YJH bands. The source is found at a …

Directly detecting thermal emission from young extrasolar planets allows measurement of
their atmospheric compositions and luminosities, which are influenced by their formation …

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 …

Abstract We present JWST Early Release Science coronagraphic observations of the super-
Jupiter exoplanet, HIP 65426b, with the Near-Infrared Camera (NIRCam) from 2 to 5 μm …