Narrow-band photometry of G and K stars near the North Galactic Pole

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Electrophotometry, G Stars, Galactic Structure, K Stars, Late Stars, Stellar Magnitude, Stellar Spectrophotometry, Abundance, Astronomical Catalogs, Data Reduction, Metals, Star Distribution

Scientific paper

Photoelectric narrow-band photometry obtained for 292 late-type stars brighter than 10 m in the North Galactic Pole area is discussed. The g, n, k, m, f-system of Dickow et al. (1970) is used. The stars were chosen from two lists: (1) all stars of spectral type G5 or later in the Henry Draper Catalog (Cannon and Pickering, 1918-1924) within 15 deg of the North Galactic Pole, together with a few BD stars; and (2) all stars classified as K or M giants and in Upgren's 25-31 deg zones (Upgren, 1962). For most of the stars, estimates of the following quantities are derived: V-magnitude, R-I color, metal abundance, MV, and the duplicity parameter res(k).

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