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The Number‐diameter Relation of Galaxies
Author(s) -
Richter G. M.
Publication year - 1976
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.19762970307
Subject(s) - physics , astrophysics , homogeneous , galaxy , luminosity function , luminosity , absolute magnitude , cluster (spacecraft) , relation (database) , astronomy , statistical physics , database , computer science , programming language
Contrary to the number‐magnitude relation, the number‐angular diameter relation is influenced by the luminosity function. The number‐diameter counts by DODD et al. (1975) are in agreement with the normal luminosity function and a homogeneous space distribution without a local density excess. Almost all the faint small (<18 arcsec) galaxies may be first‐ranked cluster members.