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. 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

5. Astrophysical Journal 2003

6. Progress of Theoretical Physics 1987

7. Astronomy and Astrophysics 2006

8. MJ ≈ 0.3

9. line cooling
dust cooling

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

11. Astrophysical Journal 2002

12. 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

13. Astrophysical Journal 2003

14. Astrophysical Journal 2010

15. Astrophysical Journal 2010
λJ = 1 AU
0.1 AU

16. Annual Review of Astronomy and Astrophysics 1966