\begin{table}%T4
\caption{Chemical abundances in ellipticals from their X-ray spectra.}\label{t4}
%\centerline
{
\begin{tabular}{llllllllllll}
\hline
\hline
Galaxy  &             [Fe/H]   &[O/Fe]& [Mg/Fe]&[S/Fe]& [Si/Fe]& [Ne/Fe]& [C/Fe]&  [N/Fe]&      Core&   ab.&  Ref.\\
&&&&&&&&& (kpc) &  &\\
\hline
%galassia               [Fe/H]  [O/Fe]  [Mg/Fe] [S/Fe]  [Si/Fe] [Ne/Fe]   [C/Fe]  [N/Fe]        note    abb  ref.
NGC~5044 &               ${\sim} 0_c/{-}0.36_o$ &    $-0.48$&        $-0.06$&        $-0.27$&        $-0.08$&        --&  --   &  --  &    48&  GS &$^a$ \\
M~87     &               $-0.11$&                $-0.44$&        $-0.15$&        --&      --&      $-0.26$&          0&      $-0.21$  &  --     &        AG & $^b$\\
M~87&            --       &                   $-0.52_c/{-}0.28_o$ & $-0.28$&   $-0.08$&     $0_c/0.1_o$&$-0.52_c/{-}0.21_o$&  -- &   --&      2.5&      GS& $^c$\\
M~87&                    $-0.009_c/{-}0.39_o$  & $-0.34_c/{-}0.20_o$  &   --  &$0_c/{-}0.09_o$   &$0.05_c/{-}0.04_o$ &--&  -- &  --  &           -- & F & $^f$\\
%M87                    esistono anche i valori grafici di Bohringer et~al...forse in tabella in qualche lavoro di finoguenov...
NGC~1399 &               ${\sim} 0.3_c/{\sim}{-}0.3_o$  &     --&      --  &  --&        --&      --&         -- &  --&       20 &    AGm&$^d$\\
NGC~4636 &               $-0.06$&                        $-0.24$&        $-0.13$&  --&    --&      $-0.09$ &   --&    0.07   &    -- &       AG & $^e$\\ \hline
\end{tabular}}
\par
\medskip
Solar abundance used: AG: Anders \& Grevesse (\cite{Anders89}, photospheric), AGm: Anders \& Grevesse (\cite{Anders89}, meteoritic), GS: Grevesse \& Sauvall (\cite{Grevesse98}), F: Feldman (\cite{Feldman92}). \\
References: $^a$: Buote et~al. (\cite{Buote03}); $^b$: Sakelliou et~al. (\cite{Sakelliou02});
$^c$: Gastaldello \& Molendi (\cite{Gastaldello02}); $^d$:  Buote (\cite{Buote02}); $^e$: Xu et~al. (\cite{Xu02}); $^f$: Matsushita et~al. (\cite{Matsushita03}).\\
%Matsumoto et~al.  (\cite{Matsumoto97}). \\
Core: radius of the region quoted as "galactic core'' in the above-mentioned paper.
\end{table}