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Contact:
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Click on an image for a larger version or, in some cases, a vector graphics version.

Hertzsprung, Publikationen des
Astrophysikalischen Observatorium
zu Potsdam, Nr. 63, 1911.
Hyades with absolute magnitudes on the
the top horizontal axis, "absolute photo-
graphic magnitude" on the lower axis, and
and color index on the vertical axis.
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Russell, Nature, 93, 252 (1914)
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Adapted from Jim Kaler
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Adapted from Michael Seeds
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Pulsational HR Diagram
From Jørgen Christensen-Dalsgaard
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Japan circa 1970
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Supernova 1987A
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Anatoly Fomenko (1967)
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From Hester et al (2010)
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Guy Ottewell
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Guy Ottewell (2006)
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Add another axis for a 3D HR
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Pattern recognition
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Abstract, in a tribal motif, of
the HR diagram on the left
Robert F. Stevens Science Ink
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Supernova Type Ia in HR diagram
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Adapted from Falk Herwig
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