Star-forming regions are excellent benchmarks for testing and validating theories of star formation and stellar evolution. The Perseus star-forming region, being one of the youngest (~0.1M_{sun} and do not show hints of over-abundance of low-mass stars in NGC1333 with respect to IC348. These groups' ages, spatial structure, and kinematics are compatible with at least three generations of stars. Future work is still needed to clarify if the formation of the youngest was triggered by the oldest. The exquisite Gaia data complemented with public archives and mined with comprehensive Bayesian methodologies allow us to identify 31% more members than previous studies, discover a new physical group (Gorgophone: 7Myr, 191 members, and 145M{sun}_), and confirm that the spatial, kinematic, and energy distributions of these groups support the hierarchical star formation scenario.

Cone search capability for table J/A+A/671/A1/tablec1 (Properties of the 1052 candidate members)