\begin{table}%t1
    \caption{\label{Nomenclature}Nomenclature.\label{abb}}
  \small%\centering
\par
    \begin{tabular}{c c}
    \hline\hline
    Abbreviation &  \\
    \hline
    ICM               & IntraCluster Medium   \\                      
    CCT              & Central Cooling Time at 0.4\%~$\rvir$ \\
    SCC~             & Strong Cool Core \\
    WCC~            & Weak Cool Core \\
    NCC~            & Non Cool Core \\
    CC~               & Cool Core (SCCs+WCCs)\\
    CF                & Cooling Flow \\
    BCG              & Brightest Cluster Galaxy\\
    EP                 & Emission Peak (X-ray) \\
    BCG-EP         & Projected separation between BCG and EP \\
    \hline
  \end{tabular}
\par
\end{table}