Tables 822 and 823 633 



STELLAR RADIATION MEASUREMENTS 



TABLE 822.— Energy Spectra of the Stars (Abbot, 1929) 



Measures made with radiometer at the Coude focus of the Mt. Wilson 100-inch reflecting 

 telescope (arbitrary units). Astrophys. Journ., 69, 293, 1929. 



Stellar energy spectrum distribution; normal scale, outside the atmosphere. 



Object 



Place in wave lengths, microns 



0.437 



0.520 



0.589 



1.316 



f3 Orionis*. . . . 

 a Lyrae 



a Cygni 



a Aquilae. . . . 

 a Canis Min. . 

 a Persei 



7 Cygni 



a Aurigae .... 



Mars 



Jupiter 



|8 Ceti 



7 Aquilae. . . . 



a Bootis 



a Tauri 



a Orionis 



/3 Andromedae 



Pegasi 



5 Sagittae .... 



a Herculis. . . . 



o Ceti 



I3t 

 26 



13 

 25 

 13 

 26 



13 

 26 



13 

 13 

 25 

 13 

 26 



25 

 26 

 26 

 25 

 25 

 25 

 25 

 26 



25 

 25 

 26 



25 

 26 



25 

 26 



13 



990 



1355 

 990 



61 



1 140 

 446 

 642 

 502 

 363 

 474 

 139 



39o 

 28 



584 

 334 

 367 

 434 

 267 

 267 

 167 



234 

 184 



434 

 284 



317 

 134 



233 

 644 



377 

 455 

 266 



355 

 277 

 189 

 244 

 244 

 388 

 366 

 178 



155 

 166 



33 

 200 



255 

 3ii 

 189 



155 



89 



in 



144 



233 

 166 

 166 



67 

 144 



287 

 267 



277 

 297 

 247 

 436 

 267 

 228 

 208 

 455 

 337 

 238 



297 

 198 

 109 

 228 

 238 



485 

 228 



257 

 218 



99 

 168 

 406 



257 

 287 



337 

 188 



21 

 9i 

 105 

 121 

 206 

 121 

 149 

 231 

 177 

 149 



369 

 256 

 241 

 263 

 298 

 199 

 376 

 461 



844 

 312 

 177 

 241 

 312 

 170 

 369 

 334 

 220 



319 

 192 



77 



17 



86 



172 



17 



17 



159 



73 



125 



202 



206 



95 



116 

 168 

 404 

 456 

 1010 

 189 

 202 

 176 

 120 

 150 

 417 

 387 

 33i 

 396 

 185 



29 



43 



38 



60 



119 



4i 

 6 



35 

 43 

 93 

 183 

 345 

 597 

 104 

 104 

 145 

 171 

 128 



348 

 342 

 299 

 194 

 116 



37 



10 

 56 

 124 

 172 

 65 

 29 

 80 



32 

 12 



83 



163 



107 



61 



26 



* Additional observations for Orionis: 0.423/1, 505; 0.454^, 738; 0.494^, 827. 

 t The dates refer to August 25, 26, and September 13, 1928, respectively. 



TABLE 823. — Stellar Temperatures, Radiation, and Diameters 



* Ratio of stellar to solar radiation outside earth's atmosphere. 



t To express in kilometers, multiply by 1.42 X io«; to express in miles, multiply by 0.805 X 10 s 



Smithsonian Tables 



