Accretion through circumstellar disks plays an important role in star formation and in
establishing the properties of the regions in which planets form and migrate. The …

Flattened, rotating disks of cool dust and gas extending for tens to hundreds of astronomical
units are found around almost all low-mass stars shortly after their birth. These disks …

Transition disks with large inner dust cavities are thought to host massive companions.
However, the disk structure inside the companion orbit and how material flows toward an …

The formation of gaseous giant planets is thought to occur in the first few million years after
stellar birth. Models predict that the process produces a deep gap in the dust component …

Detailed observations of gaps in protoplanetary disks have revealed structures that drive
current research on circumstellar disks. One such feature is the two intensity nulls seen …

Aims. We study the dependence of protoplanetary disk evolution on stellar mass using a
large sample of young stellar objects in nearby young star-forming regions. Methods. We …

We present a combined, homogenized analysis of archival Submillimeter Array (SMA) and
Atacama Large Millimeter/submillimeter Array (ALMA) observations of the spatially resolved …

We present 3D hydrodynamical models of the HD 142527 protoplanetary disc, a bright and
well-studied disc that shows spirals and shadows in scattered light around a 100 au gas …

Context. Herbig Ae/Be stars (HAeBes) have so far been studied based on relatively small
samples that are scattered throughout the sky. Their fundamental stellar and circumstellar …

Context. Even though turbulent motions are found everywhere in astrophysical systems, the
origin of this turbulence is poorly understood. When cosmic structures form, they grow in …