Stars are among the most fundamental structures of our Universe. They comprise most of the
baryonic and luminous mass of galaxies; synthesize heavy elements; and inject mass …

CO line emission represents the most accessible and widely used tracer of the molecular
ISM. This renders the translation of observed CO intensity into total H2 gas mass critical to …

We present a unified description of the scenario of global hierarchical collapse (GHC). GHC
constitutes a flow regime of (non-homologous) collapses within collapses, in which all …

We present a rich, multiwavelength, multiscale database built around the PHANGS–ALMA
CO (2− 1) survey and ancillary data. We use this database to present the distributions of …

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 …

We review current understanding of star formation, outlining an overall theoretical framework
and the observations that motivate it. A conception of star formation has emerged in which …

Molecular clouds are supported by turbulence and magnetic fields, but quantifying their
influence on cloud life cycle and star formation efficiency (SFE) remains an open question …

Whether or not molecular clouds and embedded cloud fragments are stable against
collapse is of utmost importance for the study of the star formation process. Only" …

Using data from the PdBI Arcsecond Whirlpool Survey (PAWS), we have generated the
largest extragalactic giant molecular cloud (GMC) catalog to date, containing 1507 …

Understanding the physical processes that govern the dynamical behavior of the interstellar
medium (ISM) is central to much of modern astronomy and astrophysics. The ISM is the …