Hayashi and the Thermal Physics of Collapsing Clouds Richard B. Larson Yale University.

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Presentation transcript:

Hayashi and the Thermal Physics of Collapsing Clouds Richard B. Larson Yale University

Progress of Theoretical Physics Letters 1965

Progress of Theoretical Physics 1965

Annual Review of Astronomy and Astrophysics 1966 “nearly horizontal” at T ≈ 10 K minimum at M J ≈ 0.2 optically thick

Astrophysical Journal 2003

Progress of Theoretical Physics 1987

Astronomy and Astrophysics 2006

M J ≈ 0.3

line cooling dust cooling

Publications of the Astronomical Society of Japan 1972 H 2 cooling only M J ≈ 2000

Astrophysical Journal 2002

A- collapse; B- H 2 cooling; C- cooling saturates; D- gas fully molecular; E- line opacity important; F- collisional emission; G- H 2 dissociates Astrophysical Journal 2006

Astrophysical Journal 2003

Astrophysical Journal 2010

λ J = 1 AU 0.1 AU

Annual Review of Astronomy and Astrophysics 1966

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