John R. Percy
Professor, Emeritus
Research:
Variable stars and stellar evolution; education and outreach.
Education:
Ph.D. 1968, Toronto
I use variable stars to study the nature and evolution of stars. My current interest centers on
pulsating red giants and supergiants, which represent the semi-final stages of stars’ lives, and are poorly-understood, compared with other variable star types. I use archival data, especially from the American Association of Variable Star Observers (AAVSO), which stretches back for a century or more, edit the Journal of the AAVSO, and otherwise facilitate the contributions of skilled amateurs to variable star research. I am also engaged in a wide variety of astronomy education and outreach projects.
