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Hugo von Seeliger

Hugo von Seeliger (1849 - 1924), also known as Hugo Hans Ritter von Seeliger, was a German astronomer, often considered the most important astronomer of his day.

He was born in Silesia, completed high school in Teschen in 1867, and studied at the Universities of Heidelberg and Leipzig. He earned a doctorate in astronomy in 1872 from the latter, studying under Carl Christian Bruhns. He was on the staff of the University of Bonn Observatory until 1877, as an assistant to Friedrich Wilhelm Argelander. In 1874, he directed the German expedition to the Auckland Islands to observe the transit of Venus. In 1881, he became the Director of the Gotha Observatory, and in 1882 became a Professor of Astronomy and Director of the Observatory at the University of Munich, which post he held until his death. His students included Hans Kienle, Ernst Anding, Julius Bauschinger, Paul ten Bruggencate, Gustav Herglotz, Richard Schorr, and especially Karl Schwarzschild, who earned a doctorate under him in 1898, and acknowledged Seeliger's influence in speeches throughout his career.

He was elected an Associate of the Royal Astronomical Society in 1892, and President of the Astronomische Gesellschaft from 1897 to 1921. He received numerous honours and medals, including knighthood (Ritter), between 1896 and 1917.

His contributions to astronomy include an explanation of the anomalous motion of the perihelion of Mercury (later one of the main tests of general relativity), a theory of novae coming from the collision of a star with a cloud of gas, and his confirmation of James Clerk Maxwell's theories of the composition of the rings of Saturn by studying variations in their albedo. However his main interest was in the stellar statistics of the Bonner Durchmusterung and Bonn section of the Astronomische Gesellschaft star catalogues, and in the conclusions these led about the structure of the universe. His views about the dimensions of our galaxy were consistent with Jacobus Kapteyn's later studies.

He continued his work until his death, on December 2, 1924, aged 75. The lunar crater Seeliger was named after him. Also the Seeliger Effect was named after him.

References

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Hugo von Seeliger
File:Seeliger Hugo
Born 23 September 1849(1849-09-23)
Bielsko-Biała
Died 2 December 1924 (aged 75)
Munich
Nationality  German
Fields Astronomy
Institutions University of Munich
Alma mater University of Leipzig
Doctoral advisor Carl Christian Bruhns
Doctoral students Julius Bauschinger
Gustav Herglotz
George Myers
Karl Schwarzschild

Hugo von Seeliger (23 September 1849 – 2 December 1924), also known as Hugo Hans Ritter von Seeliger, was a German astronomer, often considered the most important astronomer of his day.

He was born in Silesia, completed high school in Teschen in 1867, and studied at the Universities of Heidelberg and Leipzig. He earned a doctorate in astronomy in 1872 from the latter, studying under Carl Christian Bruhns. He was on the staff of the University of Bonn Observatory until 1877, as an assistant to Friedrich Wilhelm Argelander. In 1874, he directed the German expedition to the Auckland Islands to observe the transit of Venus. In 1881, he became the Director of the Gotha Observatory, and in 1882 became a Professor of Astronomy and Director of the Observatory at the University of Munich, which post he held until his death. His students included Hans Kienle, Ernst Anding, Julius Bauschinger, Paul ten Bruggencate, Gustav Herglotz, Richard Schorr, and especially Karl Schwarzschild, who earned a doctorate under him in 1898, and acknowledged Seeliger's influence in speeches throughout his career.

He was elected an Associate of the Royal Astronomical Society in 1892, and President of the Astronomische Gesellschaft from 1897 to 1921. He received numerous honours and medals, including knighthood (Ritter), between 1896 and 1917.

His contributions to astronomy include an explanation of the anomalous motion of the perihelion of Mercury (later one of the main tests of general relativity), a theory of novae coming from the collision of a star with a cloud of gas, and his confirmation of James Clerk Maxwell's theories of the composition of the rings of Saturn by studying variations in their albedo. However his main interest was in the stellar statistics of the Bonner Durchmusterung and Bonn section of the Astronomische Gesellschaft star catalogues, and in the conclusions these led about the structure of the universe. His views about the dimensions of our galaxy were consistent with Jacobus Kapteyn's later studies.

He continued his work until his death, on December 2, 1924, aged 75. The lunar crater Seeliger was named after him. Also the Seeliger Effect was named after him.

References


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