577 



TABLE 619.— WAVELENGTHS (IN ANGSTROMS) AND RELATIVE 

 INTENSITIES OF PROMINENT LINES IN SIMPLE SPECTRA 



(concluded) 



TABLE 620.— WAVELENGTHS OF FRAUNHOFER LINES 



For convenience of reference the values of the wavelengths corresponding to the Fraun- 

 hofer lines usually designated by the letters in the column headed "Index letter," are here 

 tabulated separately. The letters x, y, and Z were assigned by Abney. 192 Except for Dt, 

 the rest have been taken from Higg's map of the normal solar spectrum. The data in 

 columns 2, 3, and 4 are from the following sources : 



For X > 6600, Babcock, H. D., and Moore, C. E., Carnegie Inst. Washington Publ. 579, 

 1947. 



For X 3062-6600, Revised Rowland Table, St. John, C. E., et al., Carnegie Inst. Washing- 

 ton Publ. 396, 1928, with additions and corrections bv C. E. Moore, unpublished 

 (1949). 



For X < 3062, Babcock, H. D., Moore, C. E., and Coffeen, M. F., Astrophys. Journ., vol. 

 107, p. 287, 1948 (Mount Wilson Contr. No. 745). 



102 For reference, see p. 578. 



(continued) 



SMITHSONIAN PHYSICAL TABLES 



