/ftp/cats/vii/171



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VII/171             Michigan Emission-Line Objects  (MacAlpine+ 1977-1982)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VII/171
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drwxr-xr-x 257 cats archive 8192 Feb 8 10:28 [Up] drwxr-xr-x 2 cats archive 241 Jan 13 2023 [TAR file] -rw-r--r-- 1 cats archive 460 Dec 19 2022 .message -r--r--r-- 1 cats archive 4135 Feb 10 2000 ReadMe -rw-r--r-- 1 cats archive 462 Sep 24 2012 +footg5.gif -rw-r--r-- 1 cats archive 3275 Sep 24 2012 +footg8.gif -r--r--r-- 1 cats archive 7805 Feb 12 1994 catalog.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : VII/171 Michigan Emission-Line Objects (MacAlpine+ 1977-1982) ================================================================================ Curtis Schmidt-thin prism survey for extragalactic emission-line objects MacAlpine G.M., Smith S.B., Lewis D.W., Williams G.A., Feldman F.R. <Astrophys. J., 261, 412 (1982)> =1982ApJ...261..412M ================================================================================ ADC_Keywords: QSOs ; Galaxies, Seyfert ; Galaxies, Markarian Description: The objects of this catalogue were detected by using the 61-cm aperture Curtis Schmidt telescope in combination with a thin objective prism (1.8deg) at the Cerro Tololo Inter-American Observatory. The low-dispersion spectra (174nm/mm at Hbeta) cover the wavelength range between 5350 and 3400 AA, where the emission lines such that those of [OII], [OIII] and Lyalpha are visible. The objects could be detected up to 18th magnitude. Note that the list archived here is not the same as the published lists (see the "References" section below): the positions in the "catalog.dat" file are generally more accurate than those in the original publication and the origin for these is not known. In the printed lists of papers , information presented for each object also includes image dimensions from the Palomar Observatory Sky Survey, an estimated continuum apparent magnitude, a redshift estimate when feasible, or (for galaxies) a spectral classification which involves compactness, color, and line-strength parameters.