Titre du document

Luminosity Functions of Quasars and Seyfert Galaxies

Lien vers le document
Nom du Corpus

AstroConcepts

Auteur(s)
  • P. Notini 1
  • G. M. Richter 1
Affiliation(s)
  • Potsdam?Babelsberg Zentralinstitut für Astrophysik
Résumé

The optical luminosities of extragalactic objects with broad emission lines, i.e. quasi?stellar radio sources, radio quiet quasi?stellar objects and Seyfert galaxies are compared. At high luminosities (M < ? 23) we find no difference in the form of the optical luminosity function for radio quiet and radio emitting objects; at low luminosities this function is growing steeply only for radio quiet objects, whereas for objects with higher radio indices it remains nearly constant below M = ? 22. This may possibly be interpreted as indicating a division between the optically bright “quasars” and the less luminous objects. The quasars with the highest radio index show only a small scatter in optical luminosities and thus yield a well defined Hubble relation.

Langue(s) du document
Anglais
Année de publication
1972
Revue

Astronomische Nachrichten

Éditeur
Wiley
Type de publication
journal
Type de document
article
Présence de XML structuré
Non
Version de PDF
1.3
Score de qualité du texte
8.44
Nom du concept
  • Active galaxies
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - physics & astronomy ; 3 - astronomy & astrophysics
Catégories Inist
  • 1 - sciences appliquees, technologies et medecines ; 2 - sciences exactes et technologie ; 3 - terre, ocean, espace ; 4 - astronomie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Space and Planetary Science
  • 1 - Physical Sciences ; 2 - Physics and Astronomy ; 3 - Astronomy and Astrophysics
Catégories WoS
  • 1 - science ; 2 - astronomy & astrophysics
Identifiant ISTEX
748EB564E0B90646F4AB32B7D4F55D3F43B1EB8A
ark:/67375/WNG-33NJC3F8-3
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