Ruprecht-Karls-Universität Heidelberg


Mittwoch, 14. November 2012 - 16:15

Pier-Emanuel Tremblay (LSW):

"3D Models of White Dwarfs"

Zusammenfassung. White dwarfs with hydrogen-rich atmospheres are the most abundant of all degenerate objects. Their atmospheres are thought to be relatively simple, with a pure composition due to the gravitational settling, and we rely on them for age determinations of galactic structures and as spectroscopic standards. Nevertheless, a great deal of work has been done in recent years to increase the accuracy of their model spectra. Most notably, our group now rely on 3D radiation-hydrodynamics instead of the standard 1D model for the treatment of convection. I will demonstrate that our improved 3D model spectra provide a much better agreement with theories of stellar evolution.

Verantwortlich: , letzte Änderung am 05.04.2013 11:50 CEST
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