\begin{table}%t1
%\centering
\par
\caption{Summarised descriptions of the main GDCE model
 \mbox{parameters}.\label{tab:description_of_GDCE_model_parameters}} 
\begin{tabular}{ c l }
\hline \hline
Parameter & Short description\\
\hline
$k$ & Small positive integer used to parametrize the mass\\
& infall rate $F$.\\
$\Delta$ & Time after the start of stellar formation, after which\\
& delayed-production elements start being ejected.\\
$\omega$ & Efficiency of interstellar gas conversion into stars.\\
$u_0$ & Arbitrary parameter in the mass infall rate $F$.\\
$u_1$ & Time of transition between simple and Clayton\\
&model, multiplied by $\omega$.\\
$u_2$ & Time when residue formation becomes efficient,\\
&multiplied by $\omega$.\\
$u_{T_{{\rm G}}}$ & Age of the Galactic disk, multiplied by $\omega$.\\
$j$ & IMF slope corresponding to residues that evaporate.\\
$\Gamma$ & Dilution of ISM due to residue evaporation.\\
$f_{1~{\rm Fe}}$ & Fe yield divided by Fe solar abundance today\\
&(prompt contribution).\\
$f_{2~{\rm Fe}}$ & Fe yield divided by Fe solar abundance today\\
&(delayed contribution).\\
$f_{{\rm total~Eu}}$ & Eu yield divided by Eu solar abundance today.\\
$f_{1~{\rm Eu}}$ & Prompt contribution of $f_{{\rm total~Eu}}$.\\
$f_{2~{\rm Eu}}$ & Delayed contribution of $f_{{\rm total~Eu}}$.\\
$f_{1~{\rm Th}}$ & Th yield divided by Th solar abundance today.\\
$\chi$ & Relation between $f_{1~{\rm Th}}$ and $f_{{\rm total~Eu}}$.\\
\hline
\end{tabular}
\end{table}