# Selected Papers, Volume 2

## Radiative Transfer and Negative Ion of Hydrogen

Chandrasekhar has selected papers that trace the development of his ideas and that present aspects of his work not fully covered in the books he has periodically published to summarize his research in each area.

Volume 2 covers primarily the period 1940-50 and includes papers on the theory of radiative transfer and on the physics and astrophysics of the negative ion of hydrogen. Of particular note are Chandrasekhar's Gibbs Lecture to the American Mathematical Society in 1946 and his "Personal Account" presented at a conference at Erevan in the U.S.S.R. in 1981. A foreword by T. W. Mullikin, a distinguished scholar in the area of radiative transfer, and an author's note provide a historical context for the papers.

Author's Note

*Part One - Radiative Transfer*

*1. The Method of Discrete Ordinates*

1. On the Radiative Equilibrium of a Stellar Atmosphere, II

*The Astrophysical Journal*100, no. 1 (1944): 76-86

2. On the Radiative Equilibrium of a Stellar Atmosphere, V

*The Astrophysical Journal*101, no. 1 (1945): 95-107

3. On the Radiative Equilibrium of a Stellar Atmosphere, VII

*The Astrophysical Journal*101, no. 3 (1945): 328-47

4. On the Radiative Equilibrium of a Stellar Atmosphere, VIII

*The Astrophysical Journal*101, no. 3 (1945): 348-55

5. On the Radiative Equilibrium of a Stellar Atmosphere, XII

*The Astrophysical Journal*104, no. 2 (1946): 191-202

6. On the Radiative Equilibrium of a Stellar Atmosphere, XXI

*The Astrophysical Journal*106, no. 2 (1947): 152-216

*2. Radiative Transfer Allowing for Polarization of Scattering Light*

7. On the Radiative Equilibrium of a Stellar Atmosphere, X

*The Astrophysical Journal*103, no. 3 (1946): 351-70

8. On the Radiative Equilibrium of a Stellar Atmosphere, XI

*The Astrophysical Journal*104, no. 1 (1946): 110-32

9. On the Radiative Equilibrium of a Stellar Atmosphere, XIII

*The Astrophysical Journal*105, no. 1 (1947): 151-63

10. On the Radiative Equilibrium of a Stellar Atmosphere, XV

*The Astrophysical Journal*105, no. 3 (1947): 424-34

11. The Illumination and Polarization of the Sunlit Sky on Rayleigh Scattering. With Donna D. Elbert

*Transactions of the American Philosophical Society*44, pt. 6 (1954): 643-54

*3. Principles of Invariance: The H- and the X- and Y-Functions*

12. On the Radiative Equilibrium of a Stellar Atmosphere, XIV

*The Astrophysical Journal*106, no. 1 (1947): 164-203

13. On the Radiative Equilibrium of a Stellar Atmosphere, XVII

*The Astrophysical Journal*105, no. 3 (1947): 441-60

14. On the Radiative Equilibrium of a Stellar Atmosphere, XX

*The Astrophysical Journal*106, no. 2 (1947): 145-51

15. On the Radiative Equilibrium of a Stellar Atmosphere, XXII

*The Astrophysical Journal*107, no. (1948): 48-72

16. On the Radiative Equilibrium of a Stellar Atmosphere, XXII

(concluded)

*The Astrophysical Journal*107, no. 2 (1948): 188-215

17. The Angular Distribution of the Radiation at the Interface of Two Adjoining Media

*Canadian Journal of Physics*29 (1951): 14-20

18. On the Diffuse Reflection of a Pencil of Radiation by a Plane-Parallel Atmosphere

*Proceedings of the National Academy of Sciences*44, no. 9 (1958): 933-40

19. Diffuse Reflection by a Semi-Infinite Atmosphere. With H. G. Horak

*The Astrophysical Journal*134, no. 1 (1961): 45-56

*4. Miscellaneous Problems*

20. The Formation of Absorption Lines in a Moving Atmosphere

*Reviews of Modern Physics*17, nos. 2-3 (1945): 138-56

21. The Radiative Equilibrium of an Expanding Planetary Nebula.

I. Radiation Pressure in Lyman

*The Astrophysical Journal*102, no. 3 (1945): 402-28

22. The Softening of Radiation by Multiple Compton Scattering

*Proceedings of the Royal Society*, A, 192 (1948): 508-18

23. A New Type of Boundary-Value Problem in Hyperbolic Equations

*Proceedings of the Cambridge Philosophical Society*42, pt. 3 (1946): 250-60

*5. Review Articles*

24. The Transfer of Radiation in Stellar Atmospheres

*Bulletin of the American Mathematical Society*53, no. 7 (1947): 641-711

25. Radiative Transfer: A Personal Account

*Part Two - Investigation on the Negative Ion of Hydrogen and of Two-Electron Atoms*

26. Some Remarks on the Negative Hydrogen Ions and Its Absorption Coefficient

*The Astrophysical Journal*100, no. 2 (1944): 176-80

27. On the Continuous Absorption Coefficient of the Negative Hydrogen Ion

*The Astrophysical Journal*102, no. (1945): 223-31

28. On the Continuous Absorption Coefficient of the Negative Hydrogen Ion, II

*The Astrophysical Journal*102, no. 3 (1945): 395-401

29. On the Continuous Absorption Coefficient of the Negative Hydrogen Ion, III. With Frances Herman Breen

*The Astrophysical Journal*104, no. 3 (1946): 430-45

30. On the Continuous Absorption Coefficient of the Negative Hydrogen Ion, IV

*The Astrophysical Journal*128, no. 1 (1958): 114-23

31. On the Continuous Absorption Coefficient of the Negative Hydrogen Ion, V. With Donna D. Elbert

*The Astrophysical Journal*128, no. 3 (1958): 633-35

32. The Continuous Spectrum of the Sun and the Stars. With Guido Münch

*The Astrophysical Journal*104, no. 3 (1946): 446-57

33. The Story of Two Atoms

*The Scientific Monthly*64, no. 4 (1947): 313-21

34. Shift of the 1 S State of Helium, With Donna Elbert and G. Herzberg

*The Physical Review*91, no. 5 (1953): 1172-73

35. Energies of the Ground States of He, Li+, and O6+, With G. Herzberg

*The Physical Review*98, no. 4 (1955): 1050-54

**Physical Sciences: **
Astronomy and Astrophysics |
Physics and Astronomy |
Theoretical Physics

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