Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 347
gen, and more or less doubtfully a number of 456] STAR SPECTRA. 329 other metals. Secchi, on the other hand, examined greatnumbers of spectra, less in detail, but with reference toa classification of the stars from the spectroscopic pointof view. 457. Secchis Classes of Spectra. — He made four… … Fig. 110. — Secchis Types of Stellar Spectra (Keeler). of all the stars examined,—nearly all the white or bluish stars.Sirius and Vega are its types. This class includes also the Orion stars, in whose spectrahelium lines are prominent. II. Those which show a spectrum resembling that of the…
Astronomy · Constellations
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