Observational advances over the last decade have enabled high-resolution, interferometric
studies of forming multiple systems, statistical surveys of multiplicity in star-forming regions …

Star and planet formation are the complex outcomes of gravitational collapse and angular
momentum transport mediated by protostellar and protoplanetary disks. In this review, we …

This paper presents an overview of SPIRou, the new-generation near-infrared
spectropolarimeter/precision velocimeter recently installed on the 3.6-m Canada–France …

We present results from the first population synthesis study of protostellar discs. We analyse
the evolution and properties of a large sample of protostellar discs formed in a radiation …

Stellar multiplicity is a ubiquitous outcome of the star-formation process. The frequency and
main characteristics of multiple systems, and their dependence on primary mass and …

Context. Understanding the formation mechanisms of protoplanetary disks and multiple
systems and also their pristine properties are key questions for modern astrophysics. The …

In their earliest stages, protostars accrete mass from their surrounding envelopes through
circumstellar disks. Until now, the smallest observed protostar-to-envelope mass ratio was …

Context. Complex organic molecules (COMs) have been detected in a few Class 0
protostars but their origin is not well understood. While the usual picture of a hot corino …

Context. Theoretical studies of collapsing clouds have found that even a relatively weak
magnetic field may prevent the formation of disks and their fragmentation. However, most …

Angular momentum transport and the formation of rotationally supported structures are
major issues in our understanding of protostellar core formation. Whereas purely …