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The 2dF QSO Redshift Survey - II. Structure and evolution at high redshift | | Scott M. Croom
; T. Shanks
; B.J. Boyle
; R.J. Smith
; L. Miller
; N.S. Loaring
; F. Hoyle
; | | Date: |
18 Dec 2000 | | Journal: | Mon.Not.Roy.Astron.Soc. 325 (2001) 483 | | Subject: | astro-ph | | Affiliation: | 1 and 2), T. Shanks , B.J. Boyle , R.J. Smith , L. Miller , N.S. Loaring and F. Hoyle ( ICSTM, AAO, Durham, RSAA, Oxford | | Abstract: | We present a clustering analysis of QSOs over the redshift range z=0.3-2.9. We use a sample of 10558 QSOs taken from the preliminary catalogue of the 2dF QSO Redshift Survey (2QZ). The two-point redshift-space correlation function of QSOs is shown to follow a power law on scales s~1-35h-1Mpc. Fitting a power law to QSO clustering averaged over the redshift interval 0.399 per cent confidence level). A redshift dependent bias is required to reconcile QSO clustering observations with theory. A simple biasing model, in which QSOs have cosmologically long lifetimes (or alternatively form in peaks above a constant threshold in the density field) is acceptable in an EdS cosmology, but is only marginally acceptable if Omega_0=0.3 and lambda_0=0.7. Biasing models which assume QSOs form over a range in redshift, based on the Press-Schechter formalism are approximately consistent with QSO clustering evolution (abridged). | | Source: | arXiv, astro-ph/0012375 | | Services: | Forum | Review | PDF | Favorites | |
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