期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 399, 期 4, 页码 2099-2106出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-2966.2009.15400.x
关键词
galaxies: active; galaxies: evolution; galaxies: nuclei; quasars: general
资金
- ASI
- INAF
- Italian Ministry of University
- Insubria University
Starting from the quasar sample of the Sloan Digital Sky Survey (SDSS) for which the C IV line is observed, we use an analysis scheme to derive the z-dependence of the maximum mass of active black holes, which overcomes the problems related to the Malmquist bias. The same procedure is applied to the low-redshift sample of SDSS quasars for which H beta measurements are available. Combining with the results from the previously studied MgII sample, we find that the maximum mass of the quasar population increases as (1 + z)(1.64 perpendicular to 0.04) in the redshift range 0.1 (sic) z (sic) 4, which includes the epoch of maximum quasar activity.
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