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File:Open cluster HR diagram ages.gif

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Summary

Description
English: HR diagrams for two open clusters, showing the main sequence turn-off at different ages.
Date
Source Own work
Author Created by User:Worldtraveller

Reference

  • Richmond, Michael (2004-12-28). Estimating Distances across our Galaxy. Rochester Institute of Technology. Retrieved on 2008-11-29.—See the two plots near the end of the page.
  • Maeder, André (1974). " Stellar evolution near the main sequence: on some systematic differences between cluster sequences and model calculations.". Astronomy & Astrophysics 32: 177–190. Retrieved on 2008-11-28.

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