Evolved stars with initial mass between 8 10 and 40 Mo. They are core helium burning. Their spectral type is K/M, their luminosity type is I. They are losing mass ...
Status : The Red Giant Branch is a late stage of evolution for stars of initial mass about 0.5 to 8 Mo, following the Main Sequence. Stars on the RGB have a helium ...
RR Lyrae are pulsating variable stars on the Horizontal Branch in the instability strip. Their initial mass is about 0.5 Mo, and they belong to population II. Their ...