Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations

Details Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....109.2828t&link_type=abstract

Astronomical Journal v.109, p.2828

Astronomy and Astrophysics

Astronomy

43

Catalogs, Stars: Fundamental Parameters

Scientific paper

A catalog of photometry of 1990 stars on the Caby system is presented. The sample includes stars covering an extensive range in spectral type, luminosity class, and metallicity, as well as apparent magnitude. The hk indices are on the standard system defined in Anthony-Twarog et al. (1991), while the V and (b -y) indices have been transformed to the system of Olsen (1993; hereafter referred to as 093), superseding the values in the original catalog of standard stars. Extensive comparisons to three earlier u V by catalogs with a large degree of overlap are made and the residual trends discussed. The qualitative sensitivity of the hk index as a function of temperature is illustrated for the primary spectral ranges.

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