Chushiro Hayashi
Chūshirō Hayashi | |
|---|---|
 | |
| Born | July 25, 1920 Kyoto, Japan |
| Died | February 28, 2010 (aged 89) Kyoto, Japan |
| Nationality | Japanese |
| Alma mater | University of Tokyo |
| Awards | Eddington Medal in 1970 Kyoto Prize in 1995 Bruce Medal in 2004 |
| Scientific career | |
| Fields | astrophysics |
| Institutions | Kyoto University |
| Doctoral advisor | Hideki Yukawa |
| Doctoral students | Katsuhiko Sato |
Chushiro Hayashi (林 忠四郎, Hayashi Chūshirō, July 25, 1920 – February 28, 2010) was a Japanese astrophysicist. Hayashi tracks on the Hertzsprung–Russell diagram are named after him.
Hayashi was born in Kyoto and enrolled at the Imperial University of Tokyo in 1940, earning his BSc in Physics after 2½ years, in 1942. He was conscripted into the navy[1] and, after the war ended, joined the group of Hideki Yukawa at Kyoto University. He was appointed a professor at Kyoto University in 1957.[1]
He made additions to the Big Bang nucleosynthesis model that built upon the work of the classic Alpher–Bethe–Gamow paper.[2] Probably his most famous work was the astrophysical calculations that led to the Hayashi tracks of star formation,[3] and the Hayashi limit that puts a limit on star radius. He was also involved in the early study of brown dwarfs, some of the smallest stars formed.[4]
He retired in 1984 and died from pneumonia at a Kyoto hospital on February 28, 2010.[5][6]
Awards and honours
[edit]- 1965 Asahi Prize
- 1970 Eddington Medal
- 1971 Imperial Prize of the Japan Academy[7]
- 1994 Order of the Sacred Treasure, First Class[1]
- 1995 Kyoto Prize
- 2004 Bruce Medal
- Asteroid 12141 Chushayashi is named after him.
References
[edit]- ^ a b c Nakagawa, Y. (2011), "Obituary: Chushiro Hayashi (1920-2010)", Bulletin of the American Astronomical Society, 43: 014, Bibcode:2011BAAS...43..014N, doi:10.3847/BAASOBIT2011014
- ^ Hayashi, Chushiro (1961). "Proton-neutron concentration ratio in the expanding Universe at the stages preceding the formation of the elements". Progress of Theoretical Physics. 5 (2): 224–235. doi:10.1143/PTP.5.224.
- ^ Hayashi, Chushiro (1961). "Stellar evolution in early phases of gravitational contraction". Publications of the Astronomical Society of Japan. 13: 450–452. Bibcode:1961PASJ...13..450H.
- ^ Hayashi, Chushiro; Nakano, T. (1963). "Evolution of Stars of Small Masses in the Pre-Main-Sequence Stages". Progress of Theoretical Physics. 30 (4): 460–474. Bibcode:1963PThPh..30..460H. doi:10.1143/PTP.30.460.
- ^ Sugimoto, Daiichiro (2010). "Chushiro Hayashi 1920–2010". Astronomy & Geophysics. 51 (3): 3.36. Bibcode:2010A&G....51c..36S. doi:10.1111/j.1468-4004.2010.51336.x.
- ^ "Award-winning Japanese astrophysicist Hayashi dies at 89". Kyodo News. March 1, 2010. Retrieved March 1, 2010.[permanent dead link]
- ^ Japan Academy, 61st-70th; retrieved 2011-08-15
External links
[edit]
- 1920 births
- 2010 deaths
- 20th-century Japanese astronomers
- Japanese astrophysicists
- Kyoto laureates in Basic Sciences
- Academic staff of Kyoto University
- University of Tokyo alumni
- Kyoto University alumni
- Foreign associates of the National Academy of Sciences
- Deaths from pneumonia in Japan
- Recipients of the Order of Culture
- Laureates of the Imperial Prize