Lupus DANCe. Census of stars and 6D structure with Gaia-DR2 data
P.A.B. Galli, H. Bouy, J. Olivares, N. Miret-Roig, R.G. Vieira, L.M., Sarro, D. Barrado, A. Berihuete, C. Bertout, E. Bertin, J.-C. Cuillandre

TL;DR
This study uses Gaia-DR2 data to revise the stellar census of the Lupus star-forming region, identifying new members, analyzing its 6D structure, and comparing its properties with other nearby regions.
Contribution
The paper provides the first comprehensive Gaia-based membership list for Lupus and analyzes its 6D kinematic structure, revealing new insights into its age, distance, and stellar population.
Findings
Identified 137 high-probability Lupus members, including 47 new ones.
Found Lupus subgroups are at ~160 pc and share similar velocities.
Lupus is younger (1-3 Myr) than the nearby Corona-Australis region.
Abstract
Context: Lupus is recognised as one of the closest star-forming regions, but the lack of trigonometric parallaxes in the pre-Gaia era hampered many studies on the kinematic properties of this region and led to incomplete censuses of its stellar population. Aims: We use the second data release of the Gaia space mission combined with published ancillary radial velocity data to revise the census of stars and investigate the 6D structure of the Lupus complex. Methods: We performed a new membership analysis of the Lupus association based on astrometric and photometric data over a field of 160 deg2 around the main molecular clouds of the complex and compared the properties of the various subgroups in this region. Results: We identified 137 high-probability members of the Lupus association of young stars, including 47 stars that had never been reported as members before. Many of the…
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