Asteroseismology of the Nearby K-Dwarf σ Draconis using the Keck Planet Finder and TESS

Asteroseismology of dwarf stars cooler than the Sun is very challenging due to the low amplitudes and rapid timescales of oscillations. Here, we present the asteroseismic detection of solar-like oscillations at 4-minute timescales (\nu_{\mathrm{max}}\sim4300\muHz) in the nearby K-dwarf \sigma Draconis using extreme precision Doppler velocity observations from the Keck Planet... Show more