A STUDY OF THE NEBULAR [N-II] LINES IN SELECTED GASEOUS NEBULAE

[1] PHYSICAL PROCESSES IN GASEOUS NEBULAE .18. THE CHEMICAL COMPOSITION OF THE PLANETARY NEBULAE [J]. ASTROPHYSICAL JOURNAL, 1945, 102 (02) : 239 - 263

[2] TARGET AREAS FOR THE COLLISIONAL EXCITATION OF NEBULAR LINES [J]. ASTROPHYSICAL JOURNAL, 1950, 111 (03) : 609 - 610

[3] FORBIDDEN LINES OF IONIZED NITROGEN IN THE PLANETARY NEBULAE [J]. ASTRONOMICAL JOURNAL, 1949, 54 (07) : 181 - 181

[4] EXCITATION AND IONIZATION OF ATOMS BY ELECTRON IMPACT - THE BORN AND OPPENHEIMER APPROXIMATIONS .1. .2. [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1950, 243 (860) : 93 - 143

[5] MENZEL, 1940, AP J, V92, P408

[6] WILLIAMS, 1938, PUB U MICHIGAN OBS, V7, P98

[7] WYSE, 1942, AP J, V95, P365

[1] PHYSICAL PROCESSES IN GASEOUS NEBULAE .18. THE CHEMICAL COMPOSITION OF THE PLANETARY NEBULAE [J]. ASTROPHYSICAL JOURNAL, 1945, 102 (02) : 239 - 263

[2] TARGET AREAS FOR THE COLLISIONAL EXCITATION OF NEBULAR LINES [J]. ASTROPHYSICAL JOURNAL, 1950, 111 (03) : 609 - 610

[3] FORBIDDEN LINES OF IONIZED NITROGEN IN THE PLANETARY NEBULAE [J]. ASTRONOMICAL JOURNAL, 1949, 54 (07) : 181 - 181

[4] EXCITATION AND IONIZATION OF ATOMS BY ELECTRON IMPACT - THE BORN AND OPPENHEIMER APPROXIMATIONS .1. .2. [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1950, 243 (860) : 93 - 143

[5] MENZEL, 1940, AP J, V92, P408

[6] WILLIAMS, 1938, PUB U MICHIGAN OBS, V7, P98

[7] WYSE, 1942, AP J, V95, P365