Astronomy & Astrophysics

Table 1: Comparison of vibrational zero point energies for deuterated H₃⁺. $\Delta$ ( zpe) is the change in zero point energy relative to the lowest J=1, K=1 level of H₃⁺.
Isotopomer Zero point energy [cm^-1] $\Delta$ ( zpe) [K]

Carney (1980) Jensen et al. (1986) This work This work

H₃⁺ 4345.3 4361.7 0.0

H₂D⁺
3963.0 3993.3 3978.1 -644.2

D₂H⁺
3547.5 3571.5 3561.4 -1243.8

D₃⁺
3099.8 3112.3 -1890.0

**Table 1:** Comparison of vibrational zero point energies for deuterated H₃⁺. $\Delta$ ( *zpe*) is the change in zero point energy relative to the lowest J=1, K=1 level of H₃⁺.
Isotopomer	Zero point energy [cm^-1]		$\Delta$ ( zpe) [K]
	Carney (1980)	Jensen et al. (1986)	This work	This work
H₃⁺	4345.3		4361.7	0.0
H₂D⁺	3963.0	3993.3	3978.1	-644.2
D₂H⁺	3547.5	3571.5	3561.4	-1243.8
D₃⁺	3099.8		3112.3	-1890.0

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