The Clustering of AGN Using Photometric Redshifts
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The Clustering of AGN Using Photometric Redshifts
Elias Koulouridis
Antonis Georgakakis
National Observatory of Athens
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Previous Results
A. Coil et al. 2009 projected cross-correlation function (wp) in AEGIS of 132 X-ray AGNs with 4669 galaxies from DEEP2 survey.
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Limitations
Deep2 is a unique catalogue of spectroscopic redshifts.
Small number of X-ray AGN in AEGIS/DEEP2.
Other studies are not possible, like the study of the Luminosity dependent evolution of the AGN clustering.
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Limitations
Log(Lbol/Lo)
Hopkins et al. 2007
Bias
b(L)
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Probability Density Function (PDF) of Photometric Redshifts
Binned distribution with dz=0.04 from z=0 up to z=6
Our redshift bin is ±300 h -1Mpc = 5 bins in the PDF
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Samples
110 X-ray detected AGN galaxies in AEGIS/CFHTLS
~21000 PDFs ~106 random galaxies
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Results
--- spectrum z (A. Coil et al. 2009)
--- photometric z
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Future WorkPossible fields : • Lockman-Hole• XMM-LSS• CFHTLS D4• Chandra Deep Field
North• Chandra Deep Field
South• Cosmos • Subaru-XMM (UDS)
} CFHTLS