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Walter Sydney AdamsAmerican astronomer
Date of Birth: 20.12.1876
Country:  USA |
Content:
- Walter Sydney Adams
- Education and Early Career
- Research Contributions
- Honors and Legacy
- Royal Astronomical Society's Gold Medal (1917)
Walter Sydney Adams
American astronomer Walter Sydney Adams was born in Antioch, Syria, in 1876. His missionary parents returned to the United States when he was nine.
Education and Early Career
Adams graduated from Dartmouth College in 1898 and pursued further education in Germany. From 1900-1901, he studied at the University of Munich under Karl Schwarzschild and Hugo von Seeliger.
Adams worked at the Yerkes Observatory from 1901-1904 before joining the Mount Wilson Observatory in 1904. He directed the observatory from 1923 until his retirement in 1946.
Research Contributions
Adams conducted groundbreaking research on planets, stars, the Sun, and the interstellar medium. With colleagues, he measured water vapor and oxygen in Mars's atmosphere and discovered carbon dioxide in Venus's atmosphere.
He led extensive studies of stellar radial velocities and spectral parallaxes. Together with Mount Wilson Observatory staff, he determined the velocities of over 7,000 stars and calculated absolute magnitudes for several thousand others.
In 1925, Adams investigated the spectrum of the white dwarf Sirius B at the request of Arthur Eddington to detect the gravitational redshift predicted by Einstein's theory of relativity. He also demonstrated the presence of heavy elements, such as iron, in interstellar clouds.
Adams measured the Sun's rotation speed and studied spectral differences between sunspots and the undisturbed photosphere. With Henry Norris Russell, he calibrated the Rowland scale of solar spectral intensities.
Honors and Legacy
Walter Adams received numerous awards throughout his career, including:
Royal Astronomical Society's Gold Medal (1917)
National Academy of Sciences' Henry Draper Medal (1918)French Astronomical Society's Jules Janssen Prize (1926)
Paris Academy of Sciences' Janssen Medal (1935)
Pacific Astronomical Society's Catherine Bruce Gold Medal (1928)
American Astronomical Society's Henry Norris Russell Prize (1947)
Adams died in 1956. His groundbreaking research advanced our understanding of the universe and continues to inspire astronomers today.
