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    Having never taken any courses in astronomy, who was the first person to link the luminosities and colors of stars?

    Question #964. Asked by michael. (Apr 08 00 5:21 PM)


    Erin

    		It is Ejnar Hertzprung and Henry Norris Russell who hold this honor. Russell comprised the data in a diagram called the Hertzprung-Russell Diagram in 1913.

    Apr 15 00, 9:04 PM
    zbeckabee

    		The Hertzsprung-Russell diagram (usually referred to by the abbreviation H-R diagram or HRD, also known as a Colour-Magnitude diagram, or CMD) shows the relationship between absolute magnitude, luminosity, classification, and effective temperature of stars. The diagram was created circa 1910 by Ejnar Hertzsprung and Henry Norris Russell, and represented a huge leap forward in understanding stellar evolution, or the 'lives of stars'.

    http://zebu.uoregon.edu/~soper/Stars/hrdiagram.html

    http://en.wikipedia.org/wiki/Hertzsprung-Russell_diagram

    Jan 19 08, 9:21 AM

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