Star and planet formation are inextricably linked. In the earliest phases of the collapse of a
protostar, a disc forms around the young star and such discs are observed for the first …

Context. The census of open clusters in the Milky Way is in a never-before seen state of flux.
Recent works have reported hundreds of new open clusters thanks to the incredible …

Planet formation is generally described in terms of a system containing the host star and a
protoplanetary disk,–, of which the internal properties (for example, mass and metallicity) …

We present the direct-imaging discovery of a substellar companion in orbit around a Sun-
like star member of the Hyades open cluster. So far, no other substellar companions have …

Most stars and thus most planetary systems do not form in isolation. The larger star-forming
environment affects protoplanetary disks in multiple ways: Gravitational interactions with …

Observations suggested that the occurrence rate of hot Jupiters (HJs) in open clusters is
largely consistent with the field () but in the binary-rich cluster M67, the rate is. How does the …

We use three campaigns of K2 observations to complete the census of rotation in low-mass
members of the benchmark,≈ 670 Myr old open cluster Praesepe. We measure new …

The existence of giant planets on wide orbits () challenge planet formation theories; the core
accretion scenario has difficulty in forming them, whereas the disc instability model forms an …

Free-floating (or rogue) planets are planets that are liberated (or ejected) from their host
systems. Although simulations predict their existence in substantial numbers, direct …

Gravitational interactions in star-forming regions are capable of disrupting and destroying
planetary systems, as well as creating new ones. In particular, a planet can be stolen, where …