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We explore changes in the adiabatic low-order g-mode pulsation periods of0.526, 0.560, and 0.729 M$_\odot$ carbon-oxygen white dwarf models withhelium-dominated envelopes due to the presence, absence, and enhancement of$^{22}$Ne in the interior. The observed g-mode pulsation periods of such whitedwarfs are typically given to 6$-$7 significant figures of precision. Usuallywhite dwarf models without $^{22}$Ne are fit to the observed periods and otherproperties. The root-mean-square residuals to the $\simeq$ 150$-$400 slow-order g-mode periods are typically in the range of $\sigma_{rms}$$\lesssim$ 0.3 s, for a fit precision of $\sigma_{rms}/ P$ $\lesssim$ 0.3 %. Wefind average relative period shifts of $\Delta P/P$ $\simeq$ $\pm$ 0.5 % forthe low-order dipole and quadrupole g-mode pulsations within the observedeffective temperature window, with the range of $\Delta P/P$ depending on thespecific g-mode, abundance of $^{22}$Ne, effective temperature, and mass of thewhite dwarf model. This finding suggests a systematic offset may be present inthe fitting process of specific white dwarfs when $^{22}$Ne is absent. As partof the fitting processes involves adjusting the composition profiles of a whitedwarf model, our study on the impact of $^{22}$Ne can provide new inferences onthe derived interior mass fraction profiles. We encourage routinely including$^{22}$Ne mass fraction profiles, informed by stellar evolution models, tofuture generations of white dwarf model fitting processes.

On The Impact Of 22Ne On The Pulsation Periods Of Carbon-Oxygen White Dwarfs With Helium Dominated Atmospheres