6-COLOR PHOTOMETRY OF STARS .5. THE COLORS OF EXTRAGALACTIC NEBULAE

[1] ABBOT CG, 1932, SMITHSONIAN PHYSICAL, P608

[2] BAADE W, 1944, ASTROPHYS J, V100, P142

[3] BAADE W, 696 MT W CONTR

[4] The temperatures of the extragalactic nebulae and the red-shift correction [J]. ASTROPHYSICAL JOURNAL, 1938, 88 (05) : 605 - 617

[5] GREENSTEIN JL, 10 MCD OBS CONTR

[6] HUBBLE, 527 MT W CONTR

[7] HUBBLE, 1935, AP J, V82, P302

[8] HUBBLE E, 1936, REALM NEBULAE, P195

[9] KIENLE, 1938, Z ASTROPH, V16, P201

[10] KIENLE, 1940, Z ASTROPH, V20, P91

[1] ABBOT CG, 1932, SMITHSONIAN PHYSICAL, P608

[2] BAADE W, 1944, ASTROPHYS J, V100, P142

[3] BAADE W, 696 MT W CONTR

[4] The temperatures of the extragalactic nebulae and the red-shift correction [J]. ASTROPHYSICAL JOURNAL, 1938, 88 (05) : 605 - 617

[5] GREENSTEIN JL, 10 MCD OBS CONTR

[6] HUBBLE, 527 MT W CONTR

[7] HUBBLE, 1935, AP J, V82, P302

[8] HUBBLE E, 1936, REALM NEBULAE, P195

[9] KIENLE, 1938, Z ASTROPH, V16, P201

[10] KIENLE, 1940, Z ASTROPH, V20, P91