Our Sun and planetary system were born about 4.5 billion years ago. How did this happen,
and what is the nature of our heritage from these early times? This review tries to address …

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 …

We describe a large-scale far-infrared line and continuum survey of protoplanetary disk
through to young debris disk systems carried out using the ACS instrument on the Herschel …

The chemical composition of planets is inherited from that of the natal protoplanetary disk at
the time of planet formation. Increasing observational evidence suggests that planet …

Aims. As a part of the CALYPSO Large Program, we aim to constrain the properties of
protostellar jets and outflows by searching for corresponding emission in a sample of 21 …

We present 50–210 μm spectral scans of 30 Class 0/I protostellar sources, obtained with
Herschel-PACS, and 0.5–1000 μm spectral energy distributions, as part of the Dust, Ice, and …

We present far-infrared (50− 200 μm) spectroscopic observations of young pre-main-
sequence stars taken with Herschel/PACS as part of the DIGIT key project. The sample …

Context. Understanding the physical phenomena involved in the earlierst stages of
protostellar evolution requires knowledge of the heating and cooling processes that occur in …

Recent observations from Herschel allow the identification of important mechanisms
responsible both for the heating of the gas that surrounds low-mass protostars and for its …

Context. Herschel observations of water and highly excited CO (J> 9) have allowed the
physical and chemical conditions in the more active parts of protostellar outflows to be …