William Wilson Morgan

William Wilson Morgan
William Wilson Morgan
Born January 3, 1906(1906-01-03)
Died June 21, 1994(1994-06-21) (aged 88)
Nationality American
Fields astronomer
Institutions Yerkes Observatory
Notable awards Bruce Medal (1958)
Henry Draper Medal (1980)

William Wilson Morgan (January 3, 1906 – June 21, 1994) was an American astronomer.

The principal theme in Morgan's work was the study of stellar and galaxy classification. Along with Philip Keenan he developed the MK system for the classification of stars through their spectra. He also developed several galaxy morphological classification systems, including the first systems to use the physical properties of galaxies, as opposed to simple eye-ball estimates favoured by Edwin Hubble. He invented the now widely used classification cD for massive galaxies in the centres of clusters.

He worked at Yerkes Observatory. Along with Donald Osterbrock and Stewart Sharpless, he used distance measurements of O and B type stars to show the existence of spiral arms in the Milky Way Galaxy.

Contents

Honors

Awards and honors

Named after him

References

  1. ^ "Past Winners of the Catherine Wolfe Bruce Gold Medal". Astronomical Society of the Pacific. http://astrosociety.org/membership/awards/pastbruce.html. Retrieved 24 February 2011. 
  2. ^ "Grants, Prizes and Awards". American Astronomical Society. http://aas.org/grants/awards.php#russell. Retrieved 24 February 2011. 
  3. ^ "Book of Members, 1780-2010: Chapter M". American Academy of Arts and Sciences. http://www.amacad.org/publications/BookofMembers/ChapterM.pdf. Retrieved 22 April 2011. 
  4. ^ "Henry Draper Medal". National Academy of Sciences. http://www.nasonline.org/site/PageServer?pagename=AWARDS_draper. Retrieved 24 February 2011. 

See also

External links



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