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Alexandr Boyarchuk (June 21, 1931 – August 10, 2015) was a Russian physicist and astronomer.
Alexandr Boyarchuk | |
|---|---|
| Александр Алексеевич Боярчук | |
| Born | 21 June 1931 Grozny, Soviet Union |
| Died | 10 August 2015 (aged 84) Moscow, Russia |
| Nationality | Russian |
| Alma mater | Saint Petersburg State University |
| Known for | President of International Astronomical Union from 1991 to 1994 |
| Awards |
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| Scientific career | |
| Fields |
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| Institutions | Institute of Astronomy of the Russian Academy of Sciences |
Life
editIn 1953, he graduated from Leningrad University. After graduation, he worked at the Crimean Astrophysical Observatory, which was under direction of the USSR Academy of Sciences at the time. Later, he was elected a corresponding member of the same organization, and worked as an academician there until 1987. From 1987 to 2003, he was the director of the Institute of Astronomy of the Russian Academy of Sciences. From 1991 to 1993, he was also President of the International Astronomical Union.[1][2]
Scientific achievements
editBoyarchuk specialized in studying the physics of stars. He carried out numerous studies regarding the chemical composition of stars of various classes, in particular, he discovered an excess of helium in Beta Lyrae. Boyarchuk also studied the motion of stellar atmospheres, as well as the rotation of stars. He devoted a number of his works to non-stationary stars. He was the developer of a model of symbiotic stars. Based on this model, he obtained estimates of the mass, size, temperature and other characteristics of these objects. Together with E.R. Mustel, he proposed a model for the envelope of new stars. Under the leadership of Boyarchuk, the ultraviolet telescope Astron was created.
Death
editBoyarchuk died on August 10, 2015, at the age of 84 in Moscow.
References
edit- ^ "Alexander A. Boyarchuk". International Astronomical Union. Archived from the original on August 27, 2019. Retrieved July 17, 2020.
- ^ "БОЯРЧУ́К". Большая российская энциклопедия. Archived from the original on November 28, 2019. Retrieved July 18, 2020.
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