Spectroscopic analyses of HdBe stars

C.S. Jeffery
1994 Symposium - International astronomical union  
A few hydrogen-deficient B stars (or extreme helium stars: EHes) exhibit Be-type behaviour (the HdBe stars). The principal class members are BD −9°4395, LSE 78 and DY Cen. The hot RCrB stars MV Sgr and V348 Sgr and the hot EHes HD 160641 and LSS 5121 are related to these objects. Since there are wide abundance variations amongst the EHes, as well as wide variations in Be-type behaviour, the principal HdBes have been analysed for atmospheric parameters, includingTeff, loggand composition.
doi:10.1017/s0074180900215222 fatcat:zep5tidjufe7pbpxkhfqvibxhq