S Geier

Stephan Geier 

ESO, Garching, Germany

Close substellar companions to hot subdwarf stars - Tracers for the influence of small objects on late stellar evolution

 

It has been proposed that besides stellar companions, substellar objects in close orbits may be able to trigger mass loss in a common envelope phase and from hot subdwarf stars (sdBs). Indeed, close brown dwarf companions to sdBs have been found and the number of candidate systems with substellar companions increases. An overview over the most recent discoveries is given and discussed in the framework of planet-star interactions and their influence on late stellar evolution.

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