Active galactic nuclei and their large-scale structure : an eROSITA mock catalogue

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http://hdl.handle.net/10138/308466

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Comparat , J , Merloni , A , Salvato , M , Nandra , K , Boller , T , Georgakakis , A , Finoguenov , A , Dwelly , T , Buchner , J , Del Moro , A , Clerc , N , Wang , Y , Zhao , G , Prada , F , Yepes , G , Brusa , M , Krumpe , M & Liu , T 2019 , ' Active galactic nuclei and their large-scale structure : an eROSITA mock catalogue ' , Monthly Notices of the Royal Astronomical Society , vol. 487 , no. 2 , pp. 2005-2029 . https://doi.org/10.1093/mnras/stz1390

Title: Active galactic nuclei and their large-scale structure : an eROSITA mock catalogue
Author: Comparat, J.; Merloni, A.; Salvato, M.; Nandra, K.; Boller, T.; Georgakakis, A.; Finoguenov, A.; Dwelly, T.; Buchner, J.; Del Moro, A.; Clerc, N.; Wang, Y.; Zhao, G.; Prada, F.; Yepes, G.; Brusa, M.; Krumpe, M.; Liu, T.
Contributor: University of Helsinki, Department of Physics
Date: 2019-08
Language: eng
Number of pages: 25
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
URI: http://hdl.handle.net/10138/308466
Abstract: In the context of the upcoming SRG/eROSITA survey, we present an N-body simulation-based mock catalogue for X-ray-selected active galactic nucleus (AGN) samples. The model reproduces the observed hard X-ray AGN luminosity function (XLF) and the soft X-ray logN-logS from redshift 0 to 6. The XLF is reproduced to within +/- 5 per cent and the logN-logS to within +/- 20 per cent. We develop a joint X-ray - optical extinction and classification model. We adopt a set of empirical spectral energy distributions to predict observed magnitudes in the UV, optical, and NIR. With the latest eROSITA all sky survey sensitivity model, we create a high-fidelity full-sky mock catalogue of X-ray AGN. It predicts their distributions in right ascension, declination, redshift, and fluxes. Using empirical medium resolution optical spectral templates and an exposure time calculator, we find that 1.1 x 10(6) (4 x 10(5)) fibre-hours are needed to follow-up spectroscopically from the ground the detected X-ray AGN with an optical magnitude 21 <r <22.8 (22.8 <r <25) with a 4-m (8-m) class multiobject spectroscopic facility. We find that future clustering studies will measure the AGN bias to the per cent level at redshift z <1.2 and should discriminate possible scenarios of galaxy-AGN co-evolution. We predict the accuracy to which the baryon acoustic oscillation standard ruler will be measured using X-ray AGN: better than 3 per cent for AGN between redshift 0.5 to 3 and better than 1 per cent using the Ly alpha forest of X-ray QSOs discovered between redshift 2 and 3. eROSITA will provide an outstanding set of targets for future galaxy evolution and cosmological studies.
Subject: galaxies: active
large-scale structure of Universe
cosmology: observations
SUPERMASSIVE BLACK-HOLES
OSCILLATION SPECTROSCOPIC SURVEY
HALO OCCUPATION DISTRIBUTION
COSMOLOGICAL COEVOLUTION
ACOUSTIC-OSCILLATIONS
STELLAR MASS
GALAXY
AGN
QUASARS
LUMINOSITY
115 Astronomy, Space science
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