... down

Note also that $\Psi \rightarrow 0$ if $t_{\rm cool} \rightarrow \infty$, namely if the gas is cooling on a very long timescale.

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... panel

The physical mechanisms that produce such a metal-enhanced internal gas flows as well as their role in changing the [O/Fe] ratio in the gas, will be discussed in detail in Sect. 5.

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... core

We only subtract from the metal budget, a posteriori, those elements not produced in situ and followed in their evolution by means of a suitable tracer.

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