Colloquium on 19 February 2015
Discovery of starspots on Vega. First spectrocopic detection of surface structures on a normal A-type star

Details

Title: Discovery of starspots on Vega. First spectrocopic detection of surface structures on a normal A-type star
Speaker: Torsten Böhm
Date: Thursday, 19 February 2015
Time: 11:00 - 12:00
Venue: 1896 building

Abstract

The results of an in depth analysis of a data set consisting of 7000 high resolution spectra of Vega is presented. Standard A-type stars have extended radiative zones and should therefore not show any signatures of surface structures linked to magnetic activity. Surprisingly enough, such surface structures have unambiguously been discovered on Vega.

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