OB associations are unbound groups of young stars made prominent by their bright OB
members, and have long been thought to be the expanded remnants of dense star clusters …

Context. The publication of the Gaia Data Release 2 (Gaia DR2) opens a new era in
astronomy. It includes precise astrometric data (positions, proper motions, and parallaxes) …

Context. The Vela-Puppis region is known to host the Vela OB2 association as well as
several young clusters featuring OB and pre-main-sequence stars. Several spatial and …

We present a new nearby young moving group (NYMG) kinematic membership analysis
code, LocAting Constituent mEmbers In Nearby Groups (LACEwING), a new Catalog of …

Context. The Ophiuchus cloud complex is one of the best laboratories to study the earlier
stages of the stellar and protoplanetary disc evolution. The wealth of accurate astrometric …

Context. The Vela OB2 association is a group of∼ 10 Myr stars exhibiting a complex spatial
and kinematic substructure. The all-sky Gaia DR2 catalogue contains proper motions …

We construct a 3D map of the spatial density of OB stars within 500 pc from the Sun using
the Hipparcos catalogue and find three large-scale stream-like structures that allow a new …

Context. On the one hand, the second data release of the Gaia mission (Gaia DR2) has
opened a trove of astrometric and photometric data for Galactic clusters within a few …

The kinematics of stars in OB associations can provide insights into their formation,
dynamical evolution, and eventual fate. The low-mass stellar content of OB associations are …

Context. In the new era of large-scale astronomical surveys, automated methods of analysis
and classification of bulk data are a fundamental tool for fast and efficient production of …