Walter Sydney Adams
| Walter Sydney Adams | |
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 Walter Sydney Adams |
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| Born | December 20, 1876 Antioch, Syria |
| Died | May 11, 1956 (aged 79) Pasadena, California |
| Nationality | United States |
| Fields | astronomy |
| Institutions | Mount Wilson Observatory |
| Alma mater | Dartmouth College |
| Notable awards | Gold Medal of the Royal Astronomical Society (1917) Henry Draper Medal (1918) Bruce Medal (1928) |
Walter Sydney Adams (December 20, 1876 – May 11, 1956) was an American astronomer.
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[edit] Life and work
He was born in Antioch, Syria to missionary parents, and was brought to the U.S. in 1885[1] He graduated from Dartmouth College in 1898, then continued his education in Germany. After returning to the U.S., he began a career in Astronomy that culminated when he became director of the Mount Wilson Observatory.
His primary interest was the study of stellar spectra. He worked on solar spectroscopy and co-discovered a relationship between the relative intensities of certain spectral lines and the absolute magnitude of a star. He was able to demonstrate that spectra could be used to determine whether a star was a giant or a dwarf. In 1915 he began a study of the companion of Sirius and found that despite a size only slightly larger than the Earth, the surface of the star was brighter per unit area than the Sun and it was about as massive. Such a star later came to be known as a white dwarf. Along with Theodore Dunham, he discovered the strong presence of carbon dioxide in the infrared spectrum of Venus.
Adams died at the age of 79 in Pasadena, California.
[edit] Honors
Awards and honors
- Gold Medal of the Royal Astronomical Society (1917)
- Henry Draper Medal from the National Academy of Sciences (1918)[2]
- Fellow of the American Academy of Arts and Sciences (1922[3]
- Bruce Medal (1928)
- Henry Norris Russell Lectureship (1947)
Named after him
- The asteroid 3145 Walter Adams.
- A crater on Mars.
- The crater Adams on the Moon is jointly named after him, John Couch Adams and Charles Hitchcock Adams.
[edit] References
- ^ F.J.M. Stratton. "Walter Sydney Adams. 1876-1956." Biographical Memoirs of Fellows of the Royal Society, Vol. 2. (Nov., 1956), pp. 1-18.
- ^ "Henry Draper Medal". National Academy of Sciences. http://www.nasonline.org/site/PageServer?pagename=AWARDS_draper. Retrieved 19 February 2011.
- ^ "Book of Members, 1780-2010: Chapter A". American Academy of Arts and Sciences. http://www.amacad.org/publications/BookofMembers/ChapterA.pdf. Retrieved 6 April 2011.
- Asimov's Biographical Encyclopedia of Science and Technology, Isaac Asimov, Doubleday & Co., Inc., 1972, ISBN 0-385-17771-2.
- F. Wesemael, A comment on Adams' measurement of the gravitational redshift of Sirius B Royal Astronomical Society, Quarterly Journal (ISSN 0035-8738), 26, Sept. 1985, 273-278
[edit] External links
[edit] Obituaries
[edit] Further reading
- Wright, Helen (1970). "Adams, Walter Sydney". Dictionary of Scientific Biography. 1. New York: Charles Scribner's Sons. pp. 54–58. ISBN 0684101149.
- American astronomers
- Dartmouth College alumni
- Foreign Members of the Royal Society
- People from Antioch
- 1876 births
- 1956 deaths
- Recipients of the Gold Medal of the Royal Astronomical Society
- Americans reared abroad by missionary parents
- National Academy of Sciences laureates
- Fellows of the American Academy of Arts and Sciences
