Icko Iben
Icko Iben, Jr. (born June 27, 1931 in Champaign , Illinois ) is an American astronomer .
Iben, son of the librarian Icko Iben (1900–1971), who was born in Wangerland in Germany, earned his doctorate in 1958 after studying at Harvard University and the University of Illinois at Urbana-Champaign . After various other positions, he became professor of astronomy and physics at the University of Illinois in 1972, to which he is still a member.
Iben made important contributions to the theory of the structure of stars and the evolution of stars , and the changes in the abundance of elements associated with this development from the interior of the star to the observable star atmospheres. He dealt with the role of convection in red giants and AGB stars and the formation of planetary nebulae . In three frequently cited review articles from 1967, 1974 and 1983 he described the evolution of stars especially after the phase on the main sequence of the Hertzsprung-Russell diagram . Further work showed that type I supernovae arise in binary star systems.
Honors
- 1985 member of the National Academy of Sciences
- 1989 Henry Norris Russell Lectureship
- 1990 Eddington Medal
literature
- Icko Iben: Stellar Evolution Within and off the Main Sequence . In: Annual Review of Astronomy and Astrophysics . Volume 5, 1967, p. 571
- Icko Iben: POST main sequence evolution of single stars . In: Annual Review of Astronomy and Astrophysics . Volume 12, 1974, p. 215
- Icko Iben and A. Renzini: Asymptotic giant branch evolution and beyond . In: Annual Review of Astronomy and Astrophysics . Volume 21, 1983, p. 271
- Laudation by KA Pounds on the award of the Eddington Medal: Quarterly Journal of the Royal Astronomical Society . Volume 32, 1991, p. 353
Web links
| personal data | |
|---|---|
| SURNAME | Iben, Icko |
| ALTERNATIVE NAMES | Iben, Icko Jr. |
| BRIEF DESCRIPTION | American astronomer |
| DATE OF BIRTH | June 27, 1931 |
| PLACE OF BIRTH | Champaign (Illinois) |