Formation and Properties of Molecular Cloud Cores
  In this paper, we review some of the properties of dense molecular cloud cores. The results presented here rely on three-dimensional numerical simulations of isothermal, magnetized, turbulent, and self-gravitating molecular clouds (MCs) in which dense core form as a consequence of the gravo-turbulent fragmentation of the clouds. In particular we discuss issues related to the mass spectrum of the cores, their lifetimes and their virial balance. 
Sami Dib (1,2), Roberto Galvan-Madrid (3,4), Jongsoo Kim (5), Enrique   Vazquez-Semadeni (4) ((1) CEA/Saclay, (2) Lebanese U...