In section 7. Stellar structure and evolution
A preliminary look at the empirical mass distribution of hot B subdwarf Stars
Subdwarf B (sdB) stars are identified with core helium burning objects on a hot extension of the horizontal branch. The present article compiles mass measurements derived from the analysis of pulsating sdB stars and sdBs found in binaries to construct a first empirical mass distribution for this type of star. Knowing the sdB mass distribution provides a tool for constraining the single-star and binary evolution scenarios for sdBs, which are the subjects of intense discussion.