HETDEX: AGN Statistics

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

HETDEX will provide the largest well-defined sample of AGN without any preselection applied so far. It will detect more than 10000 AGN up to z=3.5 and down to g 22-24 mag, highly valuable for statistical investigations. In particular, it will probe the peak of the AGN space density between z=2-3 with high completeness and statistical accuracy, a range where colour selected samples have serious problems to discriminate AGN from the stellar locus. Thus the HETDEX AGN sample will provide much better constraints on the faint end of the AGN luminosity function, especially between z=2 and z=3.5, probing several magnitudes deeper than the SDSS.
The spectral information will allow the estimation of black hole masses and Eddington ratios for the sample up to z 2.5. This will enable the determination of the active black hole mass function and the distribution function of Eddington ratios. Furthermore, HETDEX will offer a unique data set for AGN-galaxy clustering studies, as in the redshift range 1.9

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