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II/41 420nm CN and G bands in G8-K5 spectra (Griffin+ 1960)
The following files can be converted to FITS (extension .fit or fit.gz)
photom.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=II/41
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Beginning of ReadMe :II/41 420nm CN and G bands in G8-K5 spectra (Griffin+ 1960)
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Photoelectric Measurements of the 4200-A CN Band and the G Band in G8-K5 Spectra
Griffin R.E., Redman R.O.
<Mon. Not. R. Astron. Soc., 120, 287 (1960)>
=1960MNRAS.120..287G
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ADC_Keywords: Photometry, CN band; Photometry, G band; Stars, late-type
Description:
Measurements of the lambda4200AA CN band are presented for 712
late-type stars. G band data are also included for 212 of these stars.
Mean errors of absolute magnitudes derived from CN intensities are at
least 1.5 mag. Spectral type determined by G band intensity has a mean
deviation of 0.15 class from the MK type for G to K1 stars. The file
photom.dat contains 712 data records in the form of CN ratios and
G-band ratios, with annotations.
The CN ratio is the ratio of the sum of the intensities in the
4097-4149AA and 4230-4283AA wavelength ranges to the intensity in
the 4164-4214AA range. The latter contains the CN absorption band,
and the first two ranges serve as nearby continuum references. The
ratio is a measure of the depth of the absorption in the CN band.
Values greater than 2 indicate absorption in the band.
The G-band ratio is similarly the ratio of the sum of the intensities
in the 4230-4270AA and 4342-4380AA wavelength ranges to the
intensity in the 4285-4315AA range.