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Luminosity Calibration of Late-Type Stars by Statistical Parallax using AGK3 Proper Motions

Published online by Cambridge University Press:  14 August 2015

Keiichi Ishida
Affiliation:
Tokyo Astronomical Observatory
Takao Mikami
Affiliation:
University of Tokyo

Extract

The luminosity of individual late-type stars is estimated mainly by spectral features in the MK spectral classification system or by means of the Wilson-Bappu effect. The MK spectral type is given for spectra with a dispersion of about 100 Å mm−1 which is within the reach of some Schmidt telescopes with objective prisms. On the other hand, the Wilson-Bappu effect is measured from spectra with a dispersion of about 10 Å mm−1, obtained by coudé spectrographs. In either case the luminosities must be calibrated by knowledge of apparent magnitudes and distances for some stars.

Type
Poster Session
Copyright
Copyright © Reidel 1978 

References

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