Massive-star formation triggered by Galactic HII regions

Lise Deharveng

Laboratoire d'Astrophysique de Marseille

What kinds of stars are formed at the peripheries of HII regions, and how? I will quickly review some of the processes triggering star formation on the borders of HII regions. Then I will concentrate on three questions: Can different processes be at work in the same region? Can the collect and collapse process work in an inhomogeneous medium? And how massive can the second-generation stars be?