Something Strange in the Solar Neighborhood: Anomalous Properties of Low-Mass Stars
Astronomy and astrophysics
Friday 13 March 2015
to 11:30 at
Gregory Feiden (Uppsala University)
Low-mass stellar evolution models are a cornerstone of modern astrophysics, particularly with the rise of asteroseismology and the search for extrasolar planets. It is therefore critical that stellar models provide accurate predictions of fundamental stellar properties (radius, effective temperature, luminosity). However, there is strong evidence suggesting that stellar evolution models are unable to predict the properties of low-mass stars. In this talk, I will discuss current problems faced by low-mass stellar models and the consequences of leaving these problems unresolved. I will also highlight results from studies aimed at revealing the source of disagreements between models and observations including: rotation, chemical composition, and magnetic fields.