The self-enrichment of galactic halo globular cluster: a clue to their formation ?

Figure 1.

Correlation diagram for [Y/Fe] versus [/Fe] with the data from Jehin et al. (1999) (full squares), the data of Nissen and Schuster (1997) (full triangles), the data of Zhao and Magain (1991) (full pentagon), the data of Edvardsson et al.~(1993) for [Fe/H] < -0.6 (full circles) and for [Fe/H] >- 0.6 (open circles). The zero points have been fixed by comparing the results obtained for the stars in common with Jehin et al. (1999)

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