Observations that resolve nearby galaxies into individual regions across multiple phases of
the gas–star formation feedback “matter cycle” have provided a sharp new view of molecular …

In addition to long-lived radioactive nuclei like U and Th isotopes, which have been used to
measure the age of theGalaxy, also radioactive nuclei with half-lives between 0.1 and 100 …

It remains a major challenge to derive a theory of cloud-scale (pc) star formation and
feedback, describing how galaxies convert gas into stars as a function of the galactic …

The processes of star formation and feedback, regulating the cycle of matter between gas
and stars on the scales of giant molecular clouds (GMCs;∼ 100 pc), play a major role in …

Giant molecular clouds (GMCs) are the sites of star formation and stellar feedback in
galaxies. Their properties set the initial conditions for star formation and their lifecycles …

UV radiation feedback from young massive stars plays a key role in the evolution of giant
molecular clouds (GMCs) by photoevaporating and ejecting the surrounding gas. We …

It is a major open question which physical processes stop gas accretion on to giant
molecular clouds (GMCs) and limit the efficiency at which gas is converted into stars. While …

Feedback from massive stars plays a key role in molecular cloud evolution. After the onset of
star formation, the young stellar population is exposed by photoionization, winds …

ABSTRACT A key uncertainty in galaxy evolution is the physics regulating star formation,
ranging from small-scale processes related to the life-cycle of molecular clouds within …

We present an analysis of [] Oi 63,[Oiii] 88,[Nii] 122, and [] Cii 158 far-infrared (FIR) fine-
structure line observations obtained with Herschel/PACS, for∼ 240 local luminous infrared …