A seismic approach to testing different formation channels of subdwarf B stars
A seismic approach to testing different formation channels of subdwarf B stars
Context. There are many unknowns in the formation of subdwarf B stars. Different formation channels are considered to be possible and to lead to a variety of helium-burning subdwarfs. All seismic models to date, however, assume that a subdwarf B star is a post-helium-flash-core surrounded by a thin inert layer …