Planets form in disks of gas and dust around young stars. The disk molecular reservoirs and
their chemical evolution affect all aspects of planet formation, from the coagulation of dust …

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 …

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 …

Aims. We aim to study vertical settling and radial drift of dust in protoplanetary disks from a
different perspective: an edge-on view. An estimation of the amplitude of settling and drift is …

The gas-phase CO abundance (relative to hydrogen) in protoplanetary disks decreases by
up to two orders of magnitude from its interstellar medium value of∼ 10− 4, even after …

Turbulence is a crucial factor in many models of planet formation, but it has only been
directly constrained among a small number of planet-forming disks. Building on the upper …

The evolution of protoplanetary discs and the related process of planet formation is
regulated by angular momentum transport and mass-loss processes. Over the past decade …

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 …

ABSTRACT ALMA observations of line emission from planet forming discs have
demonstrated to be an excellent tool to probe the internal disc kinematics, often revealing …

Context. Accreting planetary-mass objects have been detected at H α, but targeted searches
have mainly resulted in non-detections. Accretion tracers in the planetary-mass regime …