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• 001 Exact sciences and technology.
  • 001E Earth, ocean, space. (See also 001D14F, 001D06B02B, 001D06B01B, 001C02D)
    • 001E03 Astronomy.
      • 001E03D Stellar systems. Galactic and extragalactic objects and systems. The Universe.
        • 001E03D54 Quasars. Active or peculiar galaxies, objects, and systems.
          • 001E03D54A Quasars.
          • 001E03D54C Active and peculiar galaxies (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, active galactic nuclei).
          • 001E03D54E Starburst galaxies and infrared excess galaxies.
          • 001E03D54G Radio galaxies.
          • 001E03D54K Protogalaxies ; primordial galaxies.

Title

• en : Quasars. Active or peculiar galaxies, objects, and systems.
• fr : Quasars. Systèmes, objets et galaxies actives ou particulières.

SKOS Notation

001E03D54

In the plan

Pascal Classification Scheme