\begin{table}%t5 \caption{Component structure of the $z_{\rm abs} = 2.066$ DLA system toward Q2231$-$00.\label{Q2231-t}} %\begin{center} {\begin{tabular}{l c c c l c | l c c c l c} \hline\hline No. & $z_{\rm abs}$ & $v_{\rm rel}^*$ & $b (\sigma_b)$ & Ion & $\log N (\sigma_{\log N})$ & No. & $z_{\rm abs}$ & $v_{\rm rel}^*$ & $b (\sigma_b)$ & Ion & $\log N (\sigma_{\log N})$ \\ & & km s$^{-1}$ & km s$^{-1}$ & & & & & km s$^{-1}$ & km s$^{-1}$ & & \\ \hline \multicolumn{5}{l}{\hspace{0.3cm} Low-ion transitions} & & & & & & & \\ \hline 1 & 2.064746 & $-$138 & \phantom{0}6.6{\scriptsize (0.5)} & \ion{Fe}{ii} & 13.06{\scriptsize (0.04)} & 8 & 2.065887 & $-$27 & 4.9{\scriptsize (0.1)} & \ion{Fe}{ii} & 13.41{\scriptsize (0.02)} \\ & & & & \ion{Si}{ii} & 13.53{\scriptsize (0.12)} & & & & & \ion{Si}{ii} & 13.87{\scriptsize (0.01)} \\ 2 & 2.064897 & $-$123 & \phantom{0}9.0{\scriptsize (0.7)} & \ion{Fe}{ii} & 13.20{\scriptsize (0.07)} & & & & & \ion{S}{ii} & 13.80{\scriptsize (0.26)} \\ & & & & \ion{Si}{ii} & 13.79{\scriptsize (0.06)} & & & & & \ion{N}{i} & 13.59{\scriptsize (0.22)} \\ 3 & 2.065087 & $-$105 & 13.8{\scriptsize (1.4)} & \ion{Fe}{ii} & 13.58{\scriptsize (0.04)} & 9 & 2.066072 & \phantom{0}$-$9 & 5.5{\scriptsize (0.4)} & \ion{Fe}{ii} & 14.00{\scriptsize (0.05)} \\ & & & & \ion{Si}{ii} & 13.97{\scriptsize (0.10)} & & & & & \ion{Zn}{ii} & 11.71{\scriptsize (0.06)} \\ 4 & 2.065266 & \phantom{0}$-$88 & \phantom{0}8.6{\scriptsize (0.2)} & \ion{Fe}{ii} & 14.19{\scriptsize (0.01)} & & & & & \ion{Cr}{ii} & 12.12{\scriptsize (0.08)} \\ & & & & \ion{Zn}{ii} & 11.63{\scriptsize (0.04)} & & & & & \ion{Ni}{ii} & 12.73{\scriptsize (0.03)} \\ & & & & \ion{Cr}{ii} & 12.46{\scriptsize (0.03)} & & & & & \ion{Mn}{ii} & 11.92{\scriptsize (0.05)} \\ & & & & \ion{Ni}{ii} & 13.04{\scriptsize (0.10)} & & & & & \ion{Si}{ii} & 14.59{\scriptsize (0.04)} \\ & & & & \ion{Mn}{ii} & 11.97{\scriptsize (0.03)} & & & & & \ion{Ti}{ii} & 11.88{\scriptsize (0.18)} \\ & & & & \ion{Si}{ii} & 14.57{\scriptsize (0.04)} & & & & & \ion{S}{ii} & 14.33{\scriptsize (0.13)} \\ & & & & \ion{S}{ii} & 14.19{\scriptsize (0.13)} & & & & & \ion{P}{ii} & $<$$ 12.81$ \\ & & & & \ion{P}{ii} & $<$$12.90$ & & & & & \ion{N}{i} & 14.43{\scriptsize (0.06)} \\ & & & & \ion{N}{i} & 13.95{\scriptsize (0.11)} & 10 & 2.066161 & \phantom{$-$00}0 & 3.8{\scriptsize (0.2)} & \ion{Fe}{ii} & 14.26{\scriptsize (0.03)} \\ 5 & 2.065422 & \phantom{0}$-$72 & \phantom{0}4.2{\scriptsize (0.5)} & \ion{Fe}{ii} & 13.59{\scriptsize (0.03)} & & & & & \ion{Zn}{ii} & 11.98{\scriptsize (0.03)} \\ & & & & \ion{Zn}{ii} & 10.92{\scriptsize (0.17)} & & & & & \ion{Cr}{ii} & 12.60{\scriptsize (0.02)} \\ & & & & \ion{Cr}{ii} & 11.77{\scriptsize (0.13)} & & & & & \ion{Ni}{ii} & 13.01{\scriptsize (0.02)} \\ & & & & \ion{Ni}{ii} & 12.44{\scriptsize (0.17)} & & & & & \ion{Mn}{ii} & 12.16{\scriptsize (0.03)} \\ & & & & \ion{Mn}{ii} & 11.46{\scriptsize (0.07)} & & & & & \ion{Si}{ii} & 14.83{\scriptsize (0.03)} \\ & & & & \ion{Si}{ii} & 13.90{\scriptsize (0.06)} & & & & & \ion{Ti}{ii} & 12.58{\scriptsize (0.06)} \\ & & & & \ion{S}{ii} & 13.87{\scriptsize (0.16)} & & & & & \ion{S}{ii} & 14.66{\scriptsize (0.13)} \\ & & & & \ion{P}{ii} & $<$$12.32$ & & & & & \ion{P}{ii} & $<$$ 13.03$ \\ & & & & \ion{N}{i} & 13.22{\scriptsize (0.03)} & & & & & \ion{N}{i} & 14.76{\scriptsize (0.22)} \\ 6 & 2.065546 & \phantom{0}$-$60 & \phantom{0}6.4{\scriptsize (0.2)} & \ion{Fe}{ii} & 13.58{\scriptsize (0.02)} & 11 & 2.066275 & $+$11 & 5.4{\scriptsize (0.1)} & \ion{Fe}{ii} & 13.72{\scriptsize (0.01)} \\ & & & & \ion{Si}{ii} & 13.83{\scriptsize (0.08)} & & & & & \ion{Cr}{ii} & 12.07{\scriptsize (0.08)} \\ & & & & \ion{S}{ii} & 13.99{\scriptsize (0.14)} & & & & & \ion{Ni}{ii} & 12.70{\scriptsize (0.04)} \\ & & & & \ion{N}{i} & 13.25{\scriptsize (0.13)} & & & & & \ion{Mn}{ii} & 11.60{\scriptsize (0.06)} \\ 7 & 2.065698 & \phantom{0}$-$45 & \phantom{0}4.7{\scriptsize (0.3)} & \ion{Fe}{ii} & 13.18{\scriptsize (0.02)} & & & & & \ion{Si}{ii} & 13.94{\scriptsize (0.03)} \\ & & & & \ion{Si}{ii} & 13.57{\scriptsize (0.01)} & & & & & \ion{S}{ii} & 14.06{\scriptsize (0.21)} \\ & & & & \ion{S}{ii} & 13.89{\scriptsize (0.25)} & & & & & \ion{P}{ii} & $<$$ 12.74$ \\ & & & & \ion{N}{i} & 13.30{\scriptsize (0.23)} & & & & & \ion{N}{i} & 13.50{\scriptsize (0.23)} \\ \hline 1 & 2.064788 & $-$134 & \phantom{0}7.6{\scriptsize (3.0)} & \ion{Mg}{i} & 11.04{\scriptsize (0.12)} & 6 & 2.065903 & $-$25\phantom{.0} & 7.0{\scriptsize (0.7)} & \ion{Mg}{i} & 11.36{\scriptsize (0.03)} \\ 2 & 2.064981 & $-$115 & \phantom{0}7.9{\scriptsize (2.1)} & \ion{Mg}{i} & 11.12{\scriptsize (0.09)} & 7 & 2.066064 & \phantom{0}$-$9\phantom{.0} & 5.2{\scriptsize (0.4)} & \ion{Mg}{i} & 11.72{\scriptsize (0.05)} \\ 3 & 2.065233 & \phantom{0}$-$91 & \phantom{0}8.8{\scriptsize (0.5)} & \ion{Mg}{i} & 11.87{\scriptsize (0.03)} & 8 & 2.066155 & \phantom{0}$-$0.6 & 3.1{\scriptsize (1.3)} & \ion{Mg}{i} & 12.11{\scriptsize (0.06)} \\ 4 & 2.065461 & \phantom{0}$-$68 & 14.7{\scriptsize (1.7)} & \ion{Mg}{i} & 11.65{\scriptsize (0.05)} & 9 & 2.066274 & $+$11\phantom{.0} & 4.6{\scriptsize (1.0)} & \ion{Mg}{i} & 11.59{\scriptsize (0.06)} \\ 5 & 2.065692 & \phantom{0}$-$46 & \phantom{0}3.0{\scriptsize (1.0)} & \ion{Mg}{i} & 11.05{\scriptsize (0.06)} & & & & & \\ \hline \multicolumn{6}{l}{\hspace{0.3cm} Intermediate-ion transitions} & & & & & & \\ \hline 1 & 2.064758 & $-$137 & 3.0{\scriptsize (1.2)} & \ion{Al}{iii} & 11.72{\scriptsize (0.07)} & 6 & 2.065648 & $-$50 & 10.7{\scriptsize (2.3)} & \ion{Al}{iii} & 11.88{\scriptsize (0.07)} \\ & & & & \ion{Fe}{iii} & $<$$13.64$ & & & & & \ion{Fe}{iii} & $<$$ 13.83$ \\ 2 & 2.064909 & $-$122 & 6.6{\scriptsize (1.5)} & \ion{Al}{iii} & 12.00{\scriptsize (0.05)} & 7 & 2.065925 & $-$23 & \phantom{0}8.5{\scriptsize (2.7)} & \ion{Al}{iii} & 12.10{\scriptsize (0.10)} \\ & & & & \ion{Fe}{iii} & $<$$13.92$ & & & & & \ion{Fe}{iii} & $<$$ 13.83$ \\ 3 & 2.065123 & $-$101 & 8.5{\scriptsize (2.3)} & \ion{Al}{iii} & 12.01{\scriptsize (0.10)} & 8 & 2.066076 & \phantom{0}$-$8 & \phantom{0}3.3{\scriptsize (1.0)} & \ion{Al}{iii} & 12.04{\scriptsize (0.19)} \\ & & & & \ion{Fe}{iii} & $<$$13.78$ & & & & & \ion{Fe}{iii} & $<$$ 13.59$ \\ 4 & 2.065274 & \phantom{0}$-$87 & 6.5{\scriptsize (0.7)} & \ion{Al}{iii} & 12.50{\scriptsize (0.03)} & 9 & 2.066165 & \phantom{$-$00}0 & \phantom{0}5.1{\scriptsize (2.5)} & \ion{Al}{iii} & 12.51{\scriptsize (0.09)} \\ & & & & \ion{Fe}{iii} & $<$$13.59$ & & & & & \ion{Fe}{iii} & $<$$ 13.74$ \\ 5 & 2.065435 & \phantom{0}$-$71 & 3.0{\scriptsize (1.6)} & \ion{Al}{iii} & 11.97{\scriptsize (0.02)} & 10 & 2.066290 & $+$13 & \phantom{0}4.8{\scriptsize (1.3)} & \ion{Al}{iii} & 11.96{\scriptsize (0.13)} \\ & & & & \ion{Fe}{iii} & $<$$13.77$ & & & & & \ion{Fe}{iii} & $<$$13.59$ \\ \hline \end{tabular}} \parbox{16.5cm}{ $^*$ Velocity relative to $z=2.066161$.} %\end{center} \par \end{table}