The basic geometry of the Solar System—the shapes, spacings, and orientations of the
planetary orbits—has long been a subject of fascination as well as inspiration for planet …

Abstract Herbig Ae/Be stars are young contracting stars on the radiative track in the HR
diagram on their way to the main sequence. These stars provide a valuable link between …

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 …

Disks of gas and dust surrounding young stars are the birthplace of planets. However, the
direct detection of protoplanets forming within disks has proved elusive to date. We present …

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 …

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 …

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 …

Protoplanetary disks with large inner dust cavities are thought to host massive planetary or
substellar companions. These disks show asymmetries and rings in the millimeter …

The protoplanetary system HD 169142 is one of the few cases where a potential candidate
protoplanet has recently been detected by direct imaging in the near-infrared. To study the …

It has been suggested that the gaps and cavities recently discovered in transitional disks are
opened by planets. To explore this scenario, we combine two-dimensional two fluid (gas+ …