/ftp/cats/III/171



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III/171        MK Classifications for F- and G-type stars   (Harlan, 1969-1981)
The following files can be converted to FITS (extension .fit or fit.gz)
	paper*.dat
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Beginning of ReadMe : III/171 MK Classifications for F- and G-type stars (Harlan, 1969-1981) ================================================================================ MK Classifications for F- and G-type stars Harlan E.Q. <Astron. J. 74, 916 (1969); 75, 507 (1970); 79, 682 (1974); 86, 1896 (1981)> =1969AJ.....74..916H =1970AJ.....75..507H =1974AJ.....79..682H =1981AJ.....86.1896H =2012yCat.3171....0H ================================================================================ ADC_Keywords: MK spectral classification Keywords: stars: spectral classification Description (from B. Skiff): MK spectral classifications are given for 1051 mainly F- and G-type stars between mag 5.0 and 7.5. The types were determined from slit spectrograms using the 36-inch refractor at Lick Observatory. The prismatic dispersion was 75AA/mm at H-gamma, widened 0.6mm, on Kodak IIa-O plates. The results published in four papers between 1969 and 1981 are combined here. The original tables contained HD numbers, approximate coordinates, and magnitudes, along with the new types and HD types. Some notes were included. In this file the positions have been replaced with precise coordinates from Tycho-2 or Hipparcos-related catalogues for epoch and equinox J2000, and more accurate V magnitudes substituted. The HD types are omitted. Component designations for multiple stars have been carefully considered and sometimes put on separate lines. Additional descriptive remarks are added to Harlan's notes, mainly remarking on double stars and stars with significant proper motion. The spectral types are also included in B. Skiff's "Catalogue of Stellar Spectral Classifications" (B/mk).