|
The experimental lines have been taken from
(1) H. Mikami, S. Yamamoto, S. Saito, and M. Guélin,
1989, Astron. Astrophys. 217, L5.
14N hyperfine splitting was not resolved in these
measurements. However, it may be resolvable at lower values of
N both in the laboratory and in the ISM.
The spin-multiplicity 3 of 14N was considered in the
calculation of the partition function in order to be consistent
with calculations for the ground vibrational state,
According to ab initio calculation in
(2) M. C. McCarthy, C. A. Gottlieb, P. Thaddeus, M. Horn, and P. Botschwina,
1995, J. Chem. Phys. 103, 7820,
the v5 = 1 lowest vibrational state is
located at about 150 cm–1.
Individual contributions of v = 0 and v5 = 1
to the partition function are given in parentheses.
Since the vibrational energy of v5 = 1
is only an estimate, these contributions should be viewed
with some caution !
The dipole moment was assumed to be identical to that of the
ground vibrational state, see e050511.cat.
|