POLLUTION SCENARIO(S) FOR GLOBULAR CLUSTER STARS
Francesca D'Antona (INAF, Roma, Italy)
Why AGB stars are a good candidate for pollution
- Hot Bottom Burning CNO processing
- Lithium production - destruction
- The calibration of mass loss
- Role of the third dredge up
Two possible models for self-pollution
- Accretion on stars
- Accretion on the star-forming gas
- Can we choose?
Attention! Consequences to be kept in mind
- Helium in (polluted) GC stars
- Lithium
- CNO abundances: ON processing + 3rd dredge up --> Primary N; Is C>O at low Z?
- Role of global metallicity and predictions
