Star Clusters – Predictions

• YOUNG CLUSTER PREDICTIONS:

  • Lowest mass stars not yet on MS (not fusing H yet)
  • MOST stars still on MS (not run out of H yet)
  • Luminous stars are BLUE (not yet time to evolve red giants, WDs)

• OLD CLUSTER PREDICTIONS

  • High-mass stars have left MS (run out of H)
  • Only low-mass stars still on MS
  • Lots of red giants, supergiants, WDs

Notes: