Infrared Period-Luminosity Relations of Galactic Miras Based on Multi-Epoch Photometry and Gaia Parallax Precision

Learn about groundbreaking astronomical research in this 26-minute lecture from Stefan Uttenthaler of TU Wien, exploring period-luminosity relations of Galactic Miras using advanced multi-epoch infrared photometry and Gaia parallax data. Discover how combining observations from COBE/DIRBE instrument, WISE space observatory, and AAVSO visual light curves has revolutionized our understanding of Mira variable stars' distances and luminosity patterns. Examine the improved precision of Gaia parallax measurements for AGB stars and understand how this enhanced accuracy challenges previous literature findings in the field of stellar astronomy.