We present measurements of the dipole mode asymptotic period spacing ({Delta}{Pi}1), the coupling factor between the p- and g-modes (q), the g-mode phase offset ({epsilon}g), and the mixed-mode frequency rotational splitting ({delta}{nu}rot) for 1074 low-luminosity red giants from the Kepler mission. Using oscillation mode frequencies extracted from each star, we apply Bayesian optimization to estimate {Delta}{Pi}1 from the power spectrum of the stretched-period spectrum and to perform the subsequent forward modeling of the mixed-mode frequencies. With our measurements, we show that the mode coupling factor q shows significant anticorrelation with both the stellar mass and metallicity, and can reveal highly metal-poor stars. We present the evolution of {epsilon}g up the lower giant branch up to before the luminosity bump, and find no significant trends in {epsilon}g or {delta}{nu}rot with the stellar mass and metallicity in our sample. Additionally, we identify six new red giants showing anomalous distortions in their g-mode pattern.

Cone search capability for table J/ApJ/954/152/table1 (Mixed-mode parameters of 1068 Kepler red giants from the Gehan+ 2018, J/A+A/616/A24 sample)