/ftp/cats/3/106



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III/106             MK Classification of Visual Multiples   (Abt, 1981)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat more.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=III/106
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drwxr-xr-x 259 cats archive 8192 Dec 5 19:00 [Up] drwxr-xr-x 2 cats archive 326 Jan 13 2023 [TAR file] -rw-r--r-- 1 cats archive 466 Dec 19 2022 .message -r--r--r-- 1 cats archive 6491 Jun 15 2004 ReadMe -rw-r--r-- 1 cats archive 831 Apr 3 2016 +footg5.gif -rw-r--r-- 1 cats archive 7685 Apr 3 2016 +footg8.gif -r--r--r-- 1 cats archive 52516 Jun 15 2004 catalog.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 52369 Jun 15 2004 more.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : III/106 MK Classification of Visual Multiples (Abt, 1981) ================================================================================ Visual Multiples. VII. MK Classifications Abt H.A. <Astrophys. J. Suppl. Ser. 45, 437 (1981)> =1981ApJS...45..437A ================================================================================ ADC_Keywords: Stars, double and multiple ; MK spectral classification Keywords: stars: spectral classification - stars: stellar statistics - stars: visual multiples Description: The spectral types listed here represent about one-third of a program of MK classification of all the Northern (Dec>-30deg) visual components brighter than B 8.0mag. The spectra used were obtained in 1969-1980 with the Cassegrain spectrograph attached to the Kitt Peak No.2 91-cm telescope. The grating spectra have a dispersion of 128AA/mm, and are 1.2mm wide; they are overexposed and underdeveloped to minimize grain. The spectra were classified against standards of the "Revised MK Spectral Atlas for stars earlier than the Sun" by Morgan, Abt and Tapscott (Yerkes Obs. 1978) and of the "Spectral classification" of Morgan and Keenan (1973ARA&A..11...29M). Accurate positions, V magnitudes rounded to 0.1 mag, and remarks were added by B. Skiff in June 2004 as the file "more.dat"; some typos in the catalog were also corrected (see the "History" section below).