Absorption Continuum due to Quasi-Molecules of Calcium in Dwarf Stars of Type M

Details Absorption Continuum due to Quasi-Molecules of Calcium in Dwarf Stars of Type M Absorption Continuum due to Quasi-Molecules of Calcium in Dwarf Stars of Type M

Jul 1935

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1935natur.136...67l&link_type=abstract

Nature, Volume 136, Issue 3428, pp. 67 (1935).

Computer Science

Scientific paper

I FOUND several years ago that the dwarf stars of type M show a singular depression between the line λ 4227 and the G band. This phenomenon appears to be intimately connected with the intrinsic luminosity of the stars, and forms a criterion which can be used with low dispersion to a very faint limit in apparent magnitude. As the effect is therefore of considerable importance, I have arranged to study it more closely in slit spectra of larger dispersion by comparing a typical giant and a typical dwarf of type M. The stars chosen are : Boss 3584, gM2, abs. mag. - 0.5 (Mount Wilson spectroscopic value), Boss 2935, dM2, abs. mag. + 10.7 (Mount Wilson spectroscopic value).

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