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II/25 Photometry of orange-red CaI triplet in Late-Type Stars (Peat 1964)
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Beginning of ReadMe :II/25 Photometry of orange-red CaI triplet in Late-Type Stars (Peat 1964)
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Photometry of Orange-Red Ca I Triplet in Late-Type Stars. Table I
Peat D.W.
<Mon. Not. R. Astron. Soc., 128, 475 (1964)>
=1964MNRAS.128..475P
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ADC_Keywords: Stars, late-type ; Photometry, calcium triplet ;
Photometry, H-alpha
Description:
Calcium absorption lines were measured using narrow-band photometry on
296 high and low velocity G8-K5 stars of all luminosity classes.
Because the blue-violet region of the stellar spectra is too crowded
for narrow-band photometry, this investigation of abundance involved
measurements of the orange-red CaI triplet 4(3)P-5(3)S, with
wavelengths 6102.7, 6122.2 and 6162.2AA. "Calcium triplet ratio" is
defined as "the measured light intensity ratios, comparison/central
regions, calibrated in terms of a standard lamp as described in
previous Cambridge papers". The catalog (table I of paper) includes HD
number, (B-V) color index, Mg b ratio, Halpha ratio, Calcium triplet
ratio, and a running number.