Readme file for FeH line list from B. Plez
19-Nov-2015

Line list generated 15-Jun-2015

F4delta - X4delta transition
v'=0,1,2 v"=0,1,2
Jmax=40.5
where ' and " designate the upper and lower level, respectively.
Energy levels were computed from identified levels in 
Phillips et al., 1987, ApJS, 65, 721, in the following way:
For each vibrational level, and each of the 8 lambda-doubled
substates, a fit of energy as a function of rotational quantum
numbers (J) was made through the measured rotational levels.
In most cases this fit is of order 3, but for a few levels a 
better quadratic fit was adopted. The calculated levels were
only used when no observation was available.
Line intensities were computed from Hönl-Londonand Franck-Condon
factors (See Plez, 1998, A&A, 337, 495 for additional details), 
and then scaled to agree with the Av'v" of Langhoff and
Bauschlicher, 1990, J.Mol.S. 141, 243.
The line list is in Turbospectrum format:
  lambda      E"   log(gf)      2*J'+1                            v' v" branch J" species band
    (A)      (eV)  
  7626.509  0.086 -4.789  0.00   20.0 0.00E+00 'X' 'X'  0.0  1.0 ' 2  0 SR32  8.5 FeH     FX'  

Branch designation has its usual meaning, the first and second 
letter denoting respectively DeltaN and DeltaJ, with 
Delta=-2,-1,0,1,2 denoted by O,P,Q,R,S
The two numbers are for the four substates.
The non-designated columns contain specific but unknown
parameters that may be used in Turbospectrum.

Turbospectrum ca be found at http://ascl.net/1205.004