UVBY photometry in McCormick proper motion fields

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astrometry, Polar Regions, Southern Sky, Stellar Spectrophotometry, Ubv Spectra, Astronomical Catalogs, Astronomical Observatories, Chile, Milky Way Galaxy, Stellar Luminosity

Scientific paper

The Danish 50 cm telescope at the European Southern Observatory was used to obtain high-precision uvby photometry for 50 F2 to G2 stars, with V values in the 9.4-12.3 mag range, which were selected in the southern galactic polar regions of the McCormick proper motion fields and measured on six different nights. The brighter stars are found to systematically exhibit smaller m(1) indices, of about 0.02 mag, upon comparison with the earlier data of Blaauw et al (1976). Single measurements are given for 98 stars in eight McCormick fields at intermediate southern galactic latitudes.

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