They are the blue stars that appear to twinkle and change colour slightly. (lweb.cfa.harvard.edu/sdu/variabil...).
The blue stragglers will be mostly constant luminosity, and fainter than the RR Lyraes.
They are the blue stars that appear to twinkle and change colour slightly. (lweb.cfa.harvard.edu/sdu/variabil...).
The blue stragglers will be mostly constant luminosity, and fainter than the RR Lyraes.