A New Outburst-like Phenomenon in Cool Pulsating White Dwarf Stars

Keaton Bell (UT Austin) - April 17, 2017 at 12:10 pm

Nearly 98% of all stars in the Galaxy will conclude their evolution as compact white dwarf stars, and the history of Galactic stellar evolution is revealed through white dwarf observations. White dwarfs with pure hydrogen atmospheres (80%) are observed as photometric variables while they cool from roughly 12,500 K to 10,800 K. These pulsating stars oscillate at numerous simultaneous eigenfrequencies, the measurements of which allow us a rare opportunity to constrain the details of their interior structures using the tools of asteroseismology.

The seminar will be held in 131A Campbell Hall.

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