\begin{table}%t5 %\centering \par \caption{\label{tab:ThII4019linelist}Line list adopted for the spectrum synthesis of the Th~II $4019.129$~{\AA} line region.} \par \small \begin{tabular}{rccc}\hline\hline\noalign{\smallskip} Species & $\lambda_0$ [{\AA}] & $\chi_{\rm e}$ & $\log{g}f$\\ \hline Fe~I & 4018.506 & 4.209 & $-1.597$\\ \element[][12]{CH} & 4018.633 & 0.341 & $-3.799$\\ \element[][13]{CH} & 4018.704 & 0.733 & $-7.272$\\ Nd~II & 4018.823 & 0.064 & $-0.850$\\ \element[][13]{CH} & 4018.956 & 0.463 & $-1.379$\\ Fe~I & 4019.042 & 2.608 & $-2.780$\\ \element[][13]{CH} & 4019.010 & 0.463 & $-1.354$\\ Ce~II & 4019.057 & 1.014 & $-0.213$\\ Ni~I & 4019.058 & 1.935 & $-3.174$\\ Th~II & 4019.129 & 0.000 & $-0.228$\\ Co~I & 4019.289 & 0.582 & $-3.232$\\ Co~I & 4019.299 & 0.629 & $-3.769$\\ \element[][13]{CH} & 4019.315 & 0.463 & $-6.904$\\ \element[][12]{CH} & 4019.440 & 1.172 & $-7.971$\\ \hline \end{tabular} \end{table}