NO. 19 ENERGY SPECTRA OF STARS — ABBOT AND ALDRICH 9 



These values are shown graphically in figure 3. That they do not 

 fall in smooth reasonable curves of energy distribution is of course 

 apparent, but is easily understood by recalling that the average devi- 

 ations of mean values range from 20 down to 7 percent of the maxi- 

 mum ordinates for the individual stars. 



Nevertheless the curves show a progressive displacement of the 

 maxima toward the red for advancing spectral types. Moreover the 

 maximum for Capella, probably occurring at a little shorter wave 

 length than 0.505 micron, is close to that of the sun at 0.476, both 

 stars being of spectral type G. As stated above, we regard these 

 tentative results as offering much promise for the proposed expedi- 

 tion of 1948, and still more if it should later be possible to use the 

 200-inch reflector on Mount Palomar. 



