Molecular clouds are a fundamental ingredient of galaxies: they are the channels that
transform the diffuse gas into stars. The detailed process of how they do it is not completely …

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 …

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 …

Context. Gas phase Elemental abundances in molecular CloudS (GEMS) is an IRAM 30-m
Large Program aimed at determining the elemental abundances of carbon (C), oxygen (O) …

A major question in the field of star formation is how molecular clouds form out of the diffuse
interstellar medium (ISM). Recent advances in 3D dust mapping are revolutionizing our view …

Context. Despite recent observational and theoretical advances in mapping the magnetic
fields associated with molecular clouds, their three-dimensional (3D) morphology remains …

We present new observations of the active star formation region NGC 1333 in the Perseus
molecular cloud complex from the James Clerk Maxwell Telescope B-Fields In Star-forming …

Context. Dense molecular filaments are ubiquituous in the interstellar medium, yet their
internal physical conditions and the role of gravity, turbulence, the magnetic field, radiation …

Optical and infrared polarization mapping and recent Planck observations of the filametary
cloud L1495 in Taurus show that the large-scale magnetic field is approximately …

Context. Understanding the initial properties of star forming material and how they affect the
star formation process is a key question. The infalling gas must redistribute most of its initial …