Ca II H and K filter photometry on the uvby system. II. The catalog of observations. J/AJ/109/2828 J/AJ/109/2828 CaII H and K filter photometry II. Ca II H and K filter photometry on the uvby system. II. The catalog of observations. B A Twarog B J Anthony-Twarog Astron. J. 109 2828 1995 1995AJ....109.2828T J/A+AS/102/89 : Olsen's Stroemgren photometry of G5-type HD stars Photometry, hk A catalog 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. (1991AJ....101.1902A), while the V and (b-y) indices have been transformed to the system of Olsen (1993A&AS..102...89O), superseding the values in the original catalog of standard stars. Photometric system: Definition and properties of the H&K photometric system may be found at URL <http://obswww.unige.ch/gcpd/ph81.html>
The observations (Table 2 of the paper) HD Hentry Draper Catalogue designation --- Name1 Alternative designation number=1 alternative designations are in the following order of priority: Durchmusterung (BD, CD, CP); C Beers (1992AJ....103.1987B), or G from Giclas, Catalog <I/79> HR from Bright Star Catalog <V/50> LTT Luyten Two Tenths Catalogues, 1957, 1961 Anthony-Twarog & Twarog (1994AJ....107.1577A) RA Rose & Agostinho (1991AJ....101..950R) W Wilson 1953, Catalog <III/21> YC Jenkins, 1952, 1953, Yale Catalogue of Trigonometric Parallaxes, Catalog <I/81> --- Name2 Alternative designation number=1 alternative designations are in the following order of priority: Durchmusterung (BD, CD, CP); C Beers (1992AJ....103.1987B), or G from Giclas, Catalog <I/79> HR from Bright Star Catalog <V/50> LTT Luyten Two Tenths Catalogues, 1957, 1961 Anthony-Twarog & Twarog (1994AJ....107.1577A) RA Rose & Agostinho (1991AJ....101..950R) W Wilson 1953, Catalog <III/21> YC Jenkins, 1952, 1953, Yale Catalogue of Trigonometric Parallaxes, Catalog <I/81> --- Vmag Magnitude in V system mag e_Vmag Mean error on Vmag mag b-y colour index in Stroemgren system mag e_b-y Mean error on b-y mag hk index in Caby system mag e_hk standard deviation for a single observation mag Nobs Number of observations --- Class Classification of the star number=2 the classification is as follows: D for dwarfs redder than (b-y) = 0.41 G for giants cooler than (b-y) = 0.41 C for carbon stars Stars hotter than (b-y) = 0.41 have no classification. --- Francois Ochsenbein CDS 1995Nov21Barbara Anthony-Twarog <ANTHONY@kustar.phsx.ukans.edu> J_AJ_109_2828.xml