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 …

Star-forming regions show a rich and varied chemistry, including the presence of complex
organic molecules—in both the cold gas distributed on large scales and the hot regions …

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 …

EX Lup is a low-mass pre-main-sequence star that occasionally shows accretion-related
outbursts. Here, we present JWST/MIRI medium-resolution spectroscopy obtained for EX …

Context. Class II methanol masers are signposts of massive young stellar objects (MYSOs).
Recent evidence shows that flares of these masers are driven by MYSO accretion bursts …

Characterizing the physical conditions at disk scales in class 0 sources is crucial for
constraining the protostellar accretion process and the initial conditions for planet formation …

Context. Several sulfur-bearing molecules are observed in the interstellar medium and in
comets, in strong contrast to protoplanetary disks where only CS, H 2 CS, and SO have been …

Aims. Luminosity bursts in young FU Orionis-type stars warm up the surrounding disks of
gas and dust, thus inflicting changes on their morphological and chemical composition. In …

Context. Accretion bursts from low-mass young stellar objects (YSOs) have been known for
many decades. In recent years, the first accretion bursts of massive YSOs (MYSOs) have …

Protoplanetary disk mass is a key parameter controlling the process of planetary system
formation. CO molecular emission is often used as a tracer of gas mass in the disk. In this …