EMSAO: Turn off smoothing (NSMOOTH=0 or <n> 0) before identifying lines
to redo emission line search
EMSAO: In case of crash with "ERROR: [floating operand error]", try
rerunning with vel_init="search". Chances are the correlation
velocity isn't too good, or that it points at a bad line.
Another possibility is an inadequate continuum fit. Try
changing the order in contpars by 1 or 2, if EMSAO has been
working on your data, or by more if it hasn't yet worked.