Cosmic evolution of AGN with moderate-to-high radiative luminosity in the COSMOS field (CROSBI ID 257096)
Prilog u časopisu | izvorni znanstveni rad
Podaci o odgovornosti
Ceraj, L. ; Smolčić, V. ; Delvecchio, I. ; Delhaize, J. ; Novak, M.
engleski
Cosmic evolution of AGN with moderate-to-high radiative luminosity in the COSMOS field
We study the moderate-to-high radiative luminosity active galactic nuclei (HLAGN) within the VLA-COSMOS 3 GHz Large Project. The survey covers 2.6 square degrees centered on the COSMOS field with a 1σ sensitivity of 2.3 μJy/beam across the field. This provides the simultaneously largest and deepest radio continuum survey available to date with exquisite multi-wavelength coverage. The survey yields 10, 830 radio sources with signal-to-noise ratios ≥5. A subsample of 1, 604 HLAGN is analyzed here. These were selected via a combination of X-ray luminosity and mid-infrared colors. We derive luminosity functions for these AGN and constrain their cosmic evolution out to a redshift of z ∼ 6, for the first time decomposing the star formation and AGN contributions to the radio continuum emission in the AGN. We study the evolution of number density and luminosity density finding a peak at z ∼ 1.5 followed by a decrease out to a redshift z ∼ 6.
Surveys ; galaxies: general, active ; separation: general ; radio continuum: galaxies ; X-rays: galaxies: AGN
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Podaci o izdanju
12 (S333)
2017.
195-198
objavljeno
1743-9213
1743-9221
10.1017/s1743921318000030