Table 2: Values assumed by the chemical abundance ratios and by the metallicity in solar units after the wind by bulges of different masses, and the time by which $Z_{\odot }$ is reached in the different models (last line).

$M_{\rm b}$ ($M_{\odot}$)		 $2\times 10^{9}$ $2 \times 10^{10}$ 1011
$Z/Z_{\odot }$ 4.23 6.11 7.22
[Fe/H] +0.83 +0.96 +1.07
[O/H] +0.18 +0.36 +0.48
[Mg/H] +0.38 +0.55 +0.69
[Si/H] +0.79 +0.98 +1.13
[Ca/H] +0.63 +0.88 +1.06
[O/Fe] -0.68 -0.60 -0.59
[Mg/Fe] -0.45 -0.41 -0.38
[Si/Fe] -0.04 +0.02 +0.06
[Ca/Fe] -0.19 -0.07 +0.00
[N/H] +0.28 +0.63 +0.87
[C/H] +0.15 +0.24 +0.30

[N/C]		 +0.13 +0.40 +0.57

$t(Z_{\odot})$ (yr)		 108 $6\times10^{7}$ $3\times10^{7}$

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