The quasar population density as a result of the formation rate and the evolutionary paths. II - Adaption to the observation

Details The quasar population density as a result of the formation rate and the evolutionary paths. II - Adaption to the observation The quasar population density as a result of the formation rate and the evolutionary paths. II - Adaption to the observation

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990an....311..287b&link_type=abstract

Astronomische Nachrichten (ISSN 0004-6337), vol. 311, no. 5, 1990, p. 287-294.

Statistics

Computation

Quasars, Star Formation Rate, Stellar Evolution, Stellar Luminosity, Computational Astrophysics, Density (Number/Volume), Red Shift

Scientific paper

The continuity equation of Cavaliere et al. (1971) generalized to age-dependent luminosity evolution (Boller and Liebscher, 1989) is used to calculate quasar luminosity functions. For some combinations of source functions S(L, t) and evolutionary paths M(L) the resulting N - m relations and the X-ray background are compared with actual observations. Certain models can be excluded, but it is not possible to decide what the actual source function and the actual evolutionary path are.

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