Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7632079b&link_type=abstract
Spectrophotometry of class M stars NASA Transl. into ENGLISH from Tr. Astrophys. Inst., Acad. Sci. Kazakh SSR (USSR), v. 27, 197
Astronomy and Astrophysics
Astrophysics
M Stars, Spectrophotometry, Giant Stars, Line Spectra, Magnitude, Stellar Luminosity
Scientific paper
Energy distribution in the spectra of 126 M class stars is studied in the region of 3,200 - 7,800 A. The observations were made on a photo-electric scanning spectrometer with a concave grate (the Seya-Namioka system). The results are expressed in absolute energetic units (erg/sq cm. sec. cm) with an averaging interval of 50 A. The method of the observations and processing, accuracy, and reliability of the obtained data are presented. The mean square error (MSE) of the monochromatic illuminations is 4.4 percent on the average through the region of 3,200 - 7,300 A and for all stars. Certain investigations of the mass of M stars have been carried out according to the histograms of energy distribution. A system of quantitative spectral classification of M stars based on measuring the depressions created by Ti0 bands is suggested. The accuracy of the classification is characterized by a MSE of 0.1 - 0.2 of the spectral subclass.
Beshenova L. D.
Kharitonov A.. V.
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