The Dragon Simulation Project of NAOC (Silk Road Project) and MPA

NAOC & KIAA-PKU (China), IoA (England), MPA (Germany)


Globular Cluster (GC) simulations with millions of stars

The Dragon Simulation Project of NAOC (Silk Road Project) and MPA is the biggest and most realistic direct N-Body simulation of massive GCs so far. Efficient algorithms allow the simulations to be run on modern supercomputers for millions of stars. Including algorithms for stellar and binary evolution, the simulations offers unprecedented insights into the dynamical behavior of large GCs.


Simulation Snapshot at 10 Gyr (R7 IMF93)

Simulation snapshot at 10 Gyr

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)

Simulation Snapshot at 10 Gyr (R7 IMF93)

Color-magnitude diagram at 10 Gyr

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)

Simulation Snapshot at 10 Gyr (R7 IMF93)

Evolution of the color-magnitude diagram

Different colors represent different ages of the cluster. (R7 IMF93 model)

Simulation Snapshot at 10 Gyr (R7 IMF93)

Observation-like color-magnitude diagram at 10 Gyr

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)