17 AMBARTSUMIAN 



cosmic mass should consist of a hyperon nucleus, neutron layer 

 and outer envelope of usual composition (electrons, protons, 

 and composite nuclei). 



The internal structure of equilibrium configurations of stel- 

 lar masses, with densities of the order of the atomic nucleus 

 and higher, was studied. It was shown that the space metrics 

 inside the configuration essentially deviates from the Euclidian 

 type. 



As of 1961, Ambartsumian was a member of the Presidium 

 U.S.S.R. Academy of Sciences, and Chairman of the Commission 

 on Astrophysics of the U.S.S.R. Academy of Sciences. 

 Bibliography: 



Uber eine frage der eigenwerttheorie. Z. f. Phys., 1929, 

 #53. 



The radiative equilibrium of a planetary nebula. MN, 1932, 

 93, #1. 



On the radiative equilibrium of a planetary nebula. Lenin- 

 grad, 1933 (Bulletin of the Main Astronomical Observatory 

 in Pulkovo, 13, #114. 



The Excitation of the Metastable States in the Gaseous Nebu- 

 lae. Circular of Pulkovo Observatory, 1933, #6. 

 Die Flachenhelligkeiten der Monochromatischen Bilder 

 einiger Gasnebel. Z. f. Ap., 1933, #6. 



and N. A. Kosyrev . Uber die Massen der von neuen Sternen 

 ausgestossenen Gashiillen. Z. f. Ap., 1933, #7. 

 On the derivation of the frequency function of space veloci- 

 ties of the stars from the observed radial velocities. MN, 

 1935, 96, #3. 



and G. A. Shain. On the faint white stars in low galactic 

 latitudes. Astron. Zhur., 1936, 13, #1. 



Double stars and the cosmogonic time-scale. Nature, 1936, 

 137, #3465. 



To statistics of double stars. Astron. Zhur., 1937, 14, #3. 

 On the question of dynamics of open clusters. Scientific 

 Transactions of Leningrad State University, Math. Series 

 (Astronomy), 1938, #22. 



Problem of diffuse nebulae and cosmic absorption. Bulletin 

 of the Abastunmani Astrophysical Observatory, 1938, #2. 

 Diffusion and absorption of light in planetary atmospheres. 

 Scientific Transactions of Leningrad State University, Math. 

 Series (Astronomy), #82, 1941, #11. 



On diffusion of light by atmospheres of planets. Astron. 

 Zhur., 1942, #3. 



