Basic calibrations of the photographic RGU system. III - Intermediate and extreme Population II dwarf stars

Details Basic calibrations of the photographic RGU system. III - Intermediate and extreme Population II dwarf stars Basic calibrations of the photographic RGU system. III - Intermediate and extreme Population II dwarf stars

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...239..243b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 239, no. 1-2, Nov. 1990, p. 243-259. Research supported by SNSF.

Astronomy and Astrophysics

Astronomy

19

Astronomical Photography, Dwarf Stars, Metallicity, Stellar Color, Stellar Spectra, Calibrating, Color-Magnitude Diagram, Sky Surveys (Astronomy), Stellar Atmospheres, Subdwarf Stars

Scientific paper

This paper presents an extended calibration of the color-magnitude and two-color diagrams and the metal-abundance parameter for the intermediate Population II and the extreme halo dwarfs observed in the Basel Palomar-Schmidt RGU three-color photometric surveys of the galaxy. The calibration covers the metallicity range between values +0.50 and -3.00. It is shown that the calibrations presented are sufficiently accurate to be useful for the future analyses of photographic survey data.

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