\begin{table}%t2 \caption{\label{tab:stellarlines}Stellar photospheric absorption lines and emission lines.} %\centering \small \begin{tabular}{l c l c c c cc} \hline\hline \noalign{\smallskip} Ion & $\lambda_{\rm lab}$\tablefootmark{a} & Origin & $z_{\rm stars}$\tablefootmark{b} & $z_{\rm em}$\tablefootmark{c} & \multicolumn{1}{c}{$\Delta\upsilon$\tablefootmark{d}} & \multicolumn{1}{c}{$W_0$\tablefootmark{e}} & \multicolumn{1}{c}{$\sigma (W_0)$\tablefootmark{e}} \\ & (\AA) & & & & \multicolumn{1}{c}{(km~s$^{-1}$)} & \multicolumn{1}{c}{(\AA)} & \multicolumn{1}{c}{(\AA)} \\ \hline \ion{Si}{iii} & 1294.543 & stars & 2.7349 & & $-165$ to $+105$ & 0.13 & 0.02 \\ \ion{C}{iii} & 1296.330 & stars & 2.7349 & & $-165$ to $+195$ & 0.16\tablefootmark{f} & 0.02\tablefootmark{f} \\ \ion{Si}{iii} & 1296.726 & stars & 2.7348 & & $-165$ to $+195$ & 0.16\tablefootmark{f} & 0.02\tablefootmark{f} \\ \ion{C}{ii} & 1323.929 & stars & 2.7348 & & $-165$ to $+195$ & 0.21\tablefootmark{g} & 0.03\tablefootmark{g} \\ \ion{N}{iii} & 1324.316 & stars & 2.7345 & & $-165$ to $+195$ & 0.21\tablefootmark{g} & 0.03\tablefootmark{g} \\ \ion{Si}{ii}\tablefootmark{*} & 1533.431 & recombination & & 2.7352 & $~-95$ to $+185$ & --0.20 & 0.02 \\ \ion{N}{iv} & 1718.551 & stars & 2.7347 & & $-210$ to $+165$ & 0.57 & 0.06 \\ $[$\ion{C}{iii}] & 1906.683 & \ion{H}{ii} regions & & 2.7348 & $-185$ to $+165$ & --0.35 & 0.04 \\ \ion{C}{iii}] & 1908.734 & \ion{H}{ii} regions & & 2.7352 & $-165$ to $+185$ & --0.26 & 0.03 \\ \hline \end{tabular} \tablefoot {\tablefoottext{a}{Vacuum wavelengths;} \tablefoottext{b}{vacuum heliocentric and values measured from the centroid wavelength of the photospheric absorption lines;} \tablefoottext{c}{vacuum heliocentric and values measured from the Gaussian fits to the emission lines;} \tablefoottext{d}{velocity range for equivalent width measurements relative to $z_{\rm sys} = 2.7350$;} \tablefoottext{e}{rest-frame equivalent width and $1\sigma$~error;} \tablefoottext{f}{this value refers to the blend of lines \ion{C}{iii}~$\lambda$1296.330 and \ion{Si}{iii}~$\lambda$1296.726;} \tablefoottext{g}{this value refers to the blend of lines \ion{C}{ii}~$\lambda$1323.929 and \ion{N}{iii}~$\lambda$1324.316.}} \end{table}