Planets form and obtain their compositions in disks of gas and dust around young stars. The
chemical compositions of these planet-forming disks regulate all aspects of planetary …

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 …

Context. Water is a key molecule in the physics and chemistry of star and planet formation,
but it is difficult to observe from Earth. The Herschel Space Observatory provided …

The enormous radiative and mechanical luminosities of massive stars impact a vast range of
scales and processes, from the reionization of the universe, to the evolution of galaxies, to …

Water is a fundamental molecule in the universe. On Earth, water exists in all three phases:
gas, liquid, and solid (ice). Liquid water facilitates many chemical reactions as a solvent …

Observations of comets and asteroids show that the solar nebula that spawned our
planetary system was rich in water and organic molecules. Bombardment brought these …

Stars form from the gravitational collapse of dense molecular cloud cores. In the protostellar
phase, mass accretes from the core onto a protostar, likely through an accretion disk; and it …

Abstract IRAS 04368+ 2557 is a solar-type (low-mass) protostar embedded in a protostellar
core (L1527) in the Taurus molecular cloud,, which is only 140 parsecs away from Earth …

Context. Deuteration is a powerful tracer of the history of the cold prestellar phase in star-
forming regions. Apart from methanol, little is known about deuterium fractionation of …

We present ALMA 1.3 mm continuum, 12 CO, C 18 O, and SO data for the Class 0 protostars
Lupus 3 MMS, IRAS 15398− 3559, and IRAS 16253− 2429 at resolutions of∼ 100 au. By …