The colors are generated by B (blue), V (green) and I (red) bands. The different type of stars are shown individually (MS - main sequence; RG - red giants; AGB - asymptotic giant branches; WD - white dwarfs; BH - black holes). (R7 IMF93 model)
HG: sub-giant branch (Hertzsprung gap); RG: red giant; CHB: horizontal branch (core helium burning); FAGB: early AGB; SABG: thermally pulsing AGB. The suffix "-B" refers to bi-nary systems. (R7 IMF93 model)
The diagram simulates data similar to that potentially obtained from observation using the MPG/ESO 2.2m Telescope (La-Silla-Observatorium, Chile). (R7 IMF93 model)
This RGB image was generated from simulation data.