After decades of fast-paced technical advances, optical/infrared (O/IR) interferometry has
seen a revolution in recent years:▪ The GRAVITY instrument at the Very Large Telescope …

A general theory of planet formation has been a topic of intense study over many years. The
interest in such a theory emerges naturally from asking the question of where our planet …

Planets form and obtain their compositions in dust-and gas-rich disks around young stars,
and the outcome of this process is intimately linked to the disk chemical properties. The …

PDS 70 is a unique system in which two protoplanets, PDS 70 b and c, have been
discovered within the dust-depleted cavity of their disk, at∼ 22 and 34 au, respectively, by …

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 …

Context. High-resolution spectrographs fed by adaptive optics (AO) provide a unique
opportunity to characterize directly imaged exoplanets. Observations with such instruments …

In the past decade, ALMA observations have revealed that a large fraction of protoplanetary
discs contains rings in the dust continuum. These rings are the locations where pebbles …

Direct imaging studies have mainly used low-resolution spectroscopy (R∼ 20–100) to study
the atmospheres of giant exoplanets and brown dwarf companions, but the presence of …

Aims. We aim to demonstrate that the presence and mass of an exoplanet can now be
effectively derived from the astrometry of another exoplanet. Methods. We combined …

Aims. HD 206893 is a nearby debris disk star that hosts a previously identified brown dwarf
companion with an orbital separation of∼ 10 au. Long-term precise radial velocity (RV) …