The self-enrichment of galactic halo
a clue to their formation ?
Relations between the mass of the PGCC and the number of
SNeII exploding in its central regions for a given SFE = 0.01
(plain curve), three self-enrichment levels (dashed curves), from up to
bottom, [Fe/H] = -2, -1.5, -1. The point represents the
described in the text for a hot protogalactic background pressure of
8 × 10-11dyne.cm-2