Morgan, William Wilson (1906-94)

Astronomy and Astrophysics – Astronomy

Scientific paper

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History And Archaeoastronomy, Biographies

Scientific paper

American astronomer, staff member of the Yerkes Observatory, with Philip Keenan introduced stellar luminosity classes and the Morgan-Keenan (MK) classification scheme of stars based on the appearance of their spectra. With his students Donald E Osterbrock and Stewart Sharpless, he discovered the two nearest spiral arms in the Galaxy by mapping the distribution of bright O- and B-type stars whose...

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