After decades of fast-paced technical advances, optical/infrared (O/IR) interferometry has
seen a revolution in recent years:▪ The GRAVITY instrument at the Very Large Telescope …

FU Ori-type objects (FUors) are decades-long outbursts of accretion onto young stars that
are strong enough to viscously heat disks so that the disk outshines the central star. We …

Previous observations have shown that the≲ 10 au,≳ 400 K hot inner disk of the archetypal
accretion outburst young stellar object, FU Ori, is dominated by viscous heating. To constrain …

Deeply embedded protostars are actively fed from their surrounding envelopes through their
protostellar disc. The physical structure of such early discs might be different from that of …

Disc accretion rate onto low mass protostar FU Ori suddenly increased hundreds of times 85
yr ago and remains elevated to this day. We show that the sum of historic and recent …

Aims. We studied the accretion disk of the archetypal eruptive young star FU Orionis with the
use of mid-infrared interferometry, which enabled us to resolve the innermost regions of the …

One of the early hypotheses about the origin of FU Orionis star (FUORs) outbursts explains
them based on the fall of gas clumps from the remnants of protostellar clouds onto …

Context. Laboratory experiments on the interactions between complex organic molecules,
interstellar dust, and ultraviolet (UV) radiation are crucial to understanding the …

Aims. EXor-type objects are protostars that display powerful UV-optical outbursts caused by
intermittent and powerful events of magnetospheric accretion. These objects are not yet well …

ABSTRACT FU Orionis-type objects (FUors) are embedded protostars that undergo
episodes of high accretion, potentially indicating a widespread but poorly understood phase …