IC 4665 DANCe I. Members, empirical isochrones, magnitude distributions, present-day system mass function, and spatial distribution

Miret-Roig, N.; Bouy, H.; Olivares, J.; Sarro, L. M.; Tamura, M.; Allen, L.; Bertin, E.; Serre, S.; Berihuete, A.; Beletsky, Y.; Barrado, D.; Huelamo, N.; Cuillandre, J-C; Moraux, E.; Bouvier, J.
2019
ASTRONOMY & ASTROPHYSICS
DOI
10.1051/0004-6361/201935518
Context. The study of star formation is extremely challenging, due to the lack of complete and clean samples of young nearby clusters and star-forming regions. The recent Gaia DR2 catalogue complemented with the deep ground-based COSMIC DANCe catalogue o ffers a new database of unprecedented accuracy to revisit the membership of clusters and star-forming regions. The 30 Myr open cluster IC 4665 is one of the few well-known clusters of this age and it is an excellent target where evolutionary models can be tested and planetary formation studied.