12C16O 4thplus spectroscopic model

The Duo input file used to compute the line list for CO: the 4th positive and X-X bands. The version of Duo is May 2026. 

ZPE = 1081.77 cm-1.

i E g J unc tau +/- e/f State v L S O Ca/Ma E_Ca
48 73293.644019 1 0 0.001055 2.02E-03 + e X1Sigma+ 47 0 0 0 Ca 73293.644019
49 74262.672266 1 0 0.001077 2.04E-03 + e X1Sigma+ 48 0 0 0 Ca 74262.672266
50 75206.525162 1 0 0.001098 2.06E-03 + e X1Sigma+ 49 0 0 0 Ca 75206.525162
51 64747.982889 3 1 0.005006 9.31E-09 + f A1Pi 0 1 0 1 Ma 64747.979199
52 66236.229292 3 1 0.005006 9.25E-09 + f A1Pi 1 1 0 1 Ma 66231.060038
53 67678.892467 3 1 0.010000 9.11E-09 + f A1Pi 2 1 0 1 Ma 67678.889584

 

i: State counting number; 
E: State energy in cm-1;
g: State degeneracy;
J: Total angular momentum;
Unc: Energy uncertainty in cm-1;
tau: Radiative lifetime in s-1; 
+/-: Total parity;
e/f: Rotationless parity; 
State: Electronic state term value;
v: State vibrational quantum number;
L(Lambda: Projection of the electronic angular momentum;
S (Sigma(: Projection of the electronic spin;
O (Omega): projection of total angular momentum;
Ca/Ma: Abbreviation giving source of state energy;
E_Ca: Original (calculated) state energy in cm-1.

Links

References

  1. Tao, C., El Kher, N.A., El-Kork, N., Yurchenko, S.N., Tennyson, J., "ExoMol line lists - LXX: The CO fourth positive band system", Monthly Notices of the Royal Astronomical Society In press (2025).