Hayashi and the Thermal Physics of Collapsing Clouds

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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

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

Astrophysical Journal 2003

Progress of Theoretical Physics 1987

Astronomy and Astrophysics 2006

MJ ≈ 0.3

line cooling dust cooling

H2 cooling only Publications of the Astronomical Society of Japan 1972 MJ ≈ 2000

Astrophysical Journal 2002

Astrophysical Journal 2006 A- collapse; B- H2 cooling; C- cooling saturates; D- gas fully molecular; E- line opacity important; F- collisional emission; G- H2 dissociates

Astrophysical Journal 2003

Astrophysical Journal 2010

Astrophysical Journal 2010 λJ = 1 AU 0.1 AU

Annual Review of Astronomy and Astrophysics 1966