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 …

Cometary nuclei contain the least modified material from the formative epoch of our
planetary system, and their compositions reflect a range of processes experienced by …

We present the first high-resolution sub-millimeter survey of both dust and gas for a large
population of protoplanetary disks. Characterizing fundamental properties of protoplanetary …

We present the first part of our Disks ARound T Tauri Stars with SPHERE (DARTTS-S)
survey: observations of eight T Tauri stars that were selected based on their strong (sub) …

Circumstellar disks are thought to experience a rapid" transition" phase in their evolution that
can have a considerable impact on the formation and early development of planetary …

We present a survey of the Orion A and B molecular clouds undertaken with the IRAC and
MIPS instruments on board Spitzer. In total, five distinct fields were mapped, covering 9 deg …

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 …

Context. An era has started in which gas and dust can be observed independently in
protoplanetary disks, thanks to the recent surveys with the Atacama Large Millimeter/sub …

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 …

Transitional disks are objects whose inner disk regions have undergone substantial
clearing. The Spitzer Space Telescope produced detailed spectral energy distributions …