Asteroseismology

Stars ring. Tiny oscillations driven from within make their surfaces pulse in ways we can detect as rhythmic changes in brightness, and the frequencies of those pulsations carry information about the star's interior that no other technique can reach. Asteroseismology is, quite literally, listening to stars to learn what's inside them.

For my purposes, the most powerful thing about asteroseismology is that it delivers precise, nearly model-independent measurements of fundamental stellar properties — in particular masses, radii, and evolutionary states — for large numbers of stars observed by missions like Kepler, K2, and TESS. Those properties are exactly what I need to calibrate and validate the data-driven and spectroscopic methods I use elsewhere.

Where this connects to my work:

• Using seismic masses and ages as ground truth to anchor large spectroscopic surveys.
• Pinning down the evolutionary state of stars (for example, distinguishing red giants in different burning phases).
• Combining seismology, spectroscopy, and astrometry for a complete picture of individual stars.