Johannes Franz Hartmann
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| Johannes Franz Hartman | |
|---|---|
 | |
| Born |
January 11, 1865 Erfurt, Saxony |
| Died |
September 13, 1936 (aged 71) Göttingen |
| Citizenship | German |
| Nationality | German |
| Fields | Mineralogist |
| Institutions | Astrophysical Institute Potsdam |
| Alma mater | University of Leipzig |
| Known for | Discovering interstellar medium. |
Johannes Franz Hartmann (January 11, 1865 – September 13, 1936) was a German physicist and astronomer. In 1904, while studying the spectroscopy of Delta Orionis he noticed that most of the spectrum had a shift, except the calcium lines, which he interpreted as indicating the presence of interstellar medium[1][2]
He was the director of the Observatorio Astronómico de La Plata from November 1922 to May 1934. He oriented the work of the observatory towards astrophysics. He discovered three asteroids.
| 965 Angelica | November 4, 1921 |
| 1029 La Plata | April 28, 1924 |
| 1254 Erfordia | May 10, 1932 |
His doctorate was from the University of Leipzig in 1891 on lunar eclipses.[3]
See also
References
- ↑ Asimov, Asimov's Biographical Encyclopedia of Science and Technology 2nd Revised edition
- ↑ Hartmann, J. (1904). "Investigations on the spectrum and orbit of delta Orionis". Astrophysical Journal 19: 268–286. Bibcode:1904ApJ....19..268H. doi:10.1086/141112.
- ↑ Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. Retrieved August 22, 2012.
External links
- (Spanish) Lista de cientificos
- Hartmann, Johannes Franz
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