Asteroseismic study of TESS mission's DSCTs

We study the scaling relations of stellar parameters (effective temperature, surface gravity, density, etc.) and asteroseismic indices such as fundamental frequency, large frequency separation ({Delta}{nu}), frequency of the highest peak in the spectrum, and the peak of the envelope of oscillation mode ({nu}_max_) for DSCT targets.

Using an empirical relation and a 2D autocorrelation method, we determine the large frequency separation for targets. We obtain a highly positive correlation between the fundamental radial pressure mode and the large separation for one- third of targets. We find a scaling relation between the large separation and {nu}_max_ as {Delta}{nu}= 0.49{nu}_max_^{0.68}^, which is similar to that of the solar-like and red giant stars.