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

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Presentation on theme: "Hayashi and the Thermal Physics of Collapsing Clouds Richard B. Larson Yale University."— Presentation transcript:

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

2 Progress of Theoretical Physics Letters 1965

3 Progress of Theoretical Physics 1965

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

5 Astrophysical Journal 2003

6 Progress of Theoretical Physics 1987

7 Astronomy and Astrophysics 2006

8 M J ≈ 0.3

9 line cooling dust cooling

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

11 Astrophysical Journal 2002

12 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

13 Astrophysical Journal 2003

14 Astrophysical Journal 2010

15 λ J = 1 AU 0.1 AU

16 Annual Review of Astronomy and Astrophysics 1966


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