IA/U.Porto Cookie Seminar - Retired A Stars- Asteroseismic Constraints - 20 outubro 2016
By NelmaS on Dom, 16/10/2016 - 23:10
Fóruns:
Retired A Stars- Asteroseismic Constraints
Thomas S. H. North
School of Physics and Astronomy, University of Birmingham, UK
Resumo
Through Kepler and K2 observations of evolved planet hosts, we hope to resolve the "Retired A Star problem". Why do evolved stars show a different exoplanet host mass distribution to dwarfs? A selection bias, have the stellar masses for evolved stars derived from stellar models been overestimated, or do they represent a separate population of exoplanets. Asteroseismic observations of 5 evolved stars are presented, where we also incorporate the recent Gaia DR1 parallaxes to address the problem
20 de outubro de 2016 | 13:30
Local
IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Classroom)
Rua das Estrelas, 4150-762 Porto