Details

Autor(en) / Beteiligte

• CARLBERG, R. G

Titel

Quasar evolution via galaxy mergers

Ist Teil von

• The Astrophysical journal, 1990-02, Vol.350 (2), p.505-511

Ort / Verlag

Chicago, IL: University of Chicago Press

Erscheinungsjahr

1990

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The expected evolution of quasars is calculated using the dynamics of merging galaxies and the assumption that the birth rate of quasars is proportional to the rate of mergers. The merger rate is described using a modification of the Press-Schechter theory. As a specific model, the luminosity of a quasar is assumed to be proportional to its host galaxy's halo mass, and the amount of gas supplied per merger is independent of the quasar's luminosity, implying a lifetime that is inversely proportional to luminosity. The main strength of the model is its relation to the dynamics of clustering. Its main weaknesses are the poorly constrained relations between host galaxies and quasars. 64 refs.