Accretion through circumstellar disks plays an important role in star formation and in
establishing the properties of the regions in which planets form and migrate. The …

The mass accretion rate, Ṁ acc, is a key quantity for the understanding of the physical
processes governing the evolution of accretion discs around young low-mass (M⋆≲ 2.0 …

We present VLT/X-shooter observations of a sample of 36 accreting low-mass stellar and
substellar objects (YSOs) in the Lupus star-forming region, spanning a range in mass from …

We present high-quality, medium-resolution X-shooter/VLT spectra in the range 300− 2500
nm for a sample of 12 very low mass stars in the σ Orionis cluster. The sample includes eight …

Mass loss from jets and winds is a key ingredient in the evolution of accretion discs in young
stars. While slow winds have been recently extensively studied in T Tauri stars, little …

Context. Understanding the physical conditions of circumstellar material around young stars
is crucial to star and planet formation studies. In particular, very low-mass stars (M★< 0.2 …

Context. Emission lines that are indicative of active accretion have been observed for a
number of low-mass companions (M< 30 M Jup) to stars. Line variability is ubiquitous on …

We present the analysis of 34 new VLT/X-Shooter spectra of young stellar objects in the
Chamaeleon I star-forming region, together with four more spectra of stars in Taurus and two …

Context. The mass accretion rate (Ṁ acc) is the fundamental parameter to understand the
process of mass assembly that results in the formation of a low-mass star. This parameter …

In a companion work (Paper I) we detected a large population of highly variable Young
Stellar Objects (YSOs) in the Vista Variables in the Via Lactea (VVV) survey, typically with …