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Chushiro Hayashi

Born: 25-Jul-1920
Birthplace: Kyoto, Japan
Died: 28-Feb-2010
Location of death: Kyoto, Japan
Cause of death: Pneumonia

Gender: Male
Race or Ethnicity: Asian
Occupation: Astronomer, Physicist

Nationality: Japan
Executive summary: Big Bang astrophysicist

Astrophysicist Chushiro Hayashi studied under Hideki Yukawa, and developed theories to explain several types of astronomical phenomena. He discovered what is now called the Hayashi track (the pattern followed by pre-main-sequence stars) and the Hayashi limit (the maximum radius for a star of a given mass). He showed that electron-positron pair production must be taken into account in considering the early neutron-proton ratio in the aftermath of the Big Bang, and he is also known for his advanced models showing star formation, stellar evolution, and pre-main sequence evolution.

    University: BS, University of Tokyo (1942)
    University: PhD, Kyoto University (1954)
    Teacher: Astrophysics, Osaka Prefecture University
    Teacher: Astrophysics, Kyoto University (1945-54)
    Professor: Astrophysics, Kyoto University (1954-84)

    Bruce Medal 2004
    Kyoto Prize 1995
    Eddington Medal 1970
    National Academy of Sciences Foreign Associate
    Asteroid Namesake 12141 Chushayashi

Author of books:
Origin of the Solar System (1985, with Kiyoshi Nakazawa and Shoken M Miyama)

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