Hermann Carl Vogel (1841–1907)

Hermann Carl Vogel was born in Leipzig on 3 April 1841, he first studied at the Polytechnical school in Dresden, and then returned to Leipzig to study natural sciences at the University, where he became assistant at the Observatory.

Hermann Carl Vogel image
Portrait of Hermann Carl Vogel (1841–1907).
Credit: Wikipedia.

In 1870, increasingly interested in astronomy, he became director of the Bothkamp observatory (near Kiel), and in 1879 joined the Potsdam Astrophysical Observatory (near Berlin),of which he became director in 1882, a position he held until his death on 13 August 1907. In the course of his career he was elected to most of the largest scientific academies and societies of Europe and America.

Vogel was a pioneer in the use of astronomical spectroscopy and photography. Relying on the Doppler shift of spectral lines, he measured the solar rotation and showed that the solar photosphere shared the rotational motion inferred from sunspots observations.He also carried out some of the first spectroscopic studies of other planets in the solar system.Making use of photography in spectroscopic studies, he was among the first astronomers to measure the radial velocities of bright stars,and to attempt the classification of stars on the basis of their spectra. His spectrophotographic studies of the stars Algol and Spicalead him to the discovery of spectroscopic binaries, and allowed him to estimate some of the orbital parameters of these binary systems.

Bibliography:
Abbott, D. (ed.) 1984, The Biographical Dictionary of Scientists:Astronomers, London: Blond Educational.
Herrmann, D.B. 1973, Geschichte der Astronomie von Herschel bis Hertzsprung (trans. K. Krisciunas, The History of Astronomy from Herschel to Hertzspring, Cambridge University Press, 1984).