The Hertzsprung Russel (HR) diagram

Original Title:

    The Hertzsprung - Russel (HR) diagram

        Keywords:

        measure magnitudes open clusters HR diagram colour-colour diagram stellar evolution spectral class luminocity class Hertzsprung Russell

        Description:

          Measure accurately the B and V magnitudes of several stars in the cluster, and plot them on a Color Magnitude Diagram. The students will be asked to identify the Main Sequence of the stars in the cluster, and measure their temperature and mass.
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                  The license of the work The Hertzsprung Russel (HR) diagram by gpat
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