Investigations representing the departments. Astronomy and astrophysics .. (1903)
University of Chicago · Chicago : The University of Chicago Press · leaf 414
Decennial Publications. VIII Plate XI 4200i I 4- 43(X)(i 4400 4oOO 41)00 47IHI r 1 If Mil 1 J^l IH Pisf. IIV) Sunilll Fig. 1. Spectra of Second and Fourth Types (Blue Kegion) .5900 4000 K H … 4.>;iO :i0 40 4.ir)0 M Gciitilionnti(III) 19 Pise.lIVl (II) Fig. 2. Spectra of Second, Third, and Focrth Types(Violet Region)
Astronomy
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