TABLE 848.— A LIST OF NEBULAR LINES* 745 



Intensity 



X Classification 



H I 



4340.5 2 2 S, P — 5 2 S, P, D 



4861.3 2 2 S, P — 4 2 S, P, D 

 6562.8 2 2 S, P — 3 2 S, P, D 

 He I 



3888.6 2s 8 S — 3p 8 P 



4471.5 2p 8 P — 4d 8 D 



5015.7 2s 1 S-3p 1 P 



5875.6 2p 3 P - 3d 8 D 



6678.1 2p J P — 3d*D 

 He II 

 4541.6 4 2 S, P, D,F — 9 2 S, P, D, F, G 



4685.8 3 2 S, P, D — 4 2 S, P, D, F 

 5411.6 4 2 S,P, D, F — 7 2 S, P, D, F, G 

 C II 



4267.2 3d 2 D — 4f 2 F 20.9 

 N II 



5755.0 [2p 21 D-2p 21 S] 



6548.4 [2p 28 P 1 — 2p 21 D] 



6583.9 [2p 23 P 2 — 2p 21 D] 

 O I 

 6300.2 [2p 4 3 P 2 — 2p 4 X D] 2.0 50 



O II 



3726.2 [2p 24 S — 2p 32 D.J 



3729.1 [2p 84 S — 2p 82 D 2 .J 



7319.0 [2p 82 D 2V4 -2p 32 P] 



7330.4 [2p 8 2 D^ — 2p 8 2 P] 

 O III 



4363.2 T2p 21 D-2p 21 S] 



4959.5 [2p 28 P,-2p 21 D] 



5007.6 [2p 2 8 P 2 — 2p 2 J D] 

 Ne III 



3868.7 t2p 48 P 2 -2p 41 D] 

 3967.5 [2p 43 P 1 -2p 41 D] 

 Ne IV 



4714.1 [2p 32 D 2V4 — 2p 32 P] 



4719.7 [2p 82 D 1% — 2p 82 P] 

 Ne V 



3345.8 [2p 23 P 1 — 2p 21 D] 



3425.8 [2p 28 P 2 — 2p 21 D] 

 S II 



4068.5. [3p 34 S-3p 82 P I1/4 ] 



4076.5 [3p 34 S-3p 82 P^] 



6717.3 [3p 34 S — 3p 32 D 2 ./J 

 6731.5 [3p 84 S — 3p 32 D lV J 

 A IV 



4711.4 [3p 34 S-3p 32 D 2 *] 



4740.3 [3p 34 S — 3p 82 D 1 .^] 

 Fe XI 



3871.9 [3p 43 P 1 -3p 41 D] 



The above table, containing most of the strongest and/or important lines under nebular 



conditions, is taken from a more complete list. 2 " 9 The brackets [ ] about a classification 

 indicate a forbidden transition. These wavelengths are in all cases except Ne III and 

 Ne V the values calculated from series analyses of the ions concerned. The last two 



columns give the observed intensities in the objects NGC 7027 and 7662. P indicates the 

 line is present but out of the range covered by the observations and intensity estimates ; 



< represents a blend with a line classified otherwise, transition indicated probably an 

 appreciable contributor ; << is also a blend with a line classified otherwise, transition 

 indicated probably is not an appreciable contributor. 



* Prepared by Edith J. Tebo, Harvard College Observatory. 



^Bowen, I. S., and Wyse, A. B., Lick Obs. Bull., vol. 19, p. 1, 1939. 



SMITHSONIAN PHYSICAL TABLES 



