The magnetic field is a key ingredient in the recipe of star formation. However, the
importance of the magnetic field in the early stages of the formation of low-and high-mass …

An observational review is provided of the properties of accretion disks around young stars.
It concerns the primordial disks of intermediate-and high-mass young stellar objects in …

ABSTRACT Massive stars (M> 8 M☉) typically form in parsec-scale molecular clumps that
collapse and fragment, leading to the birth of a cluster of stellar objects. We investigate the …

Context. The earliest phases of the formation of high-mass stars are not well known. It is
unclear whether high-mass cores in monolithic collapse exist or not, and what the accretion …

We present a study of outflows at extremely early stages of high-mass star formation
obtained from the ALMA Survey of 70 μm dark High-mass clumps in Early Stages (ASHES) …

How mass is accumulated from cloud-scale down to individual stars is a key open question
in understanding high-mass star formation. Here, we present the mass accumulation …

Abstract We present Submillimeter Array observations of seven massive molecular clumps
that are dark in the far-infrared for wavelengths up to 70 μm. Our 1.3 mm continuum images …

Interferometric observations of the W33A massive star formation region, performed with the
Submillimeter Array and the Very Large Array at resolutions from 5''(0.1 pc) to 0 farcs 5 (0.01 …

We present ALMA dust polarization and molecular line observations toward four clumps (I
(N), I, IV, and V) in the massive star-forming region NGC 6334. In conjunction with large …

The relation between the mass accretion rate on to the circumstellar disc and the rate of
mass ejection by magnetically driven winds is investigated using three-dimensional …