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Quasistellar objects, radiogalaxies, intergalactic matter: observations
Seyfert galaxies, N galaxies, BL Lac objects, and quasars are generally called galaxies with active nuclei. The author gives an unambiguous definition of these different classes of objects, showing the similarities and the differences which exist between them and proposes a simple classification, is...
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| Lenguaje: | eng |
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1980
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| Acceso en línea: | http://cds.cern.ch/record/879217 |