Quasi-stellar objects in the ALHAMBRA survey⋆

Author： Matute I. Márquez I. Masegosa J. Husillos C. del Olmo A. Perea J. Alfaro E. J. Fernández-Soto A. Moles M. Aguerri J. A. L. Aparicio-Villegas T. Benítez N. Broadhurst T. Cabrera-Cano J. Castander F. J. Cepa J. Cerviño M. Cristóbal-Hornillos D. Infante L. González Delgado R. M. Martínez V. J. Molino A. Prada F. Quintana J. M.

Publisher： Edp Sciences

E-ISSN： 1432-0746|542|issue|A20-A20

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.542, Iss.issue, 2012-05, pp. : A20-A20

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Context. Even the spectroscopic capabilities of today’s ground and space-based observatories can not keep up with the enormous flow of detections (>10⁵ deg^-2) unveiled in modern cosmological surveys as: i) would be required enormous telescope time to perform the spectroscopic follow-ups and ii) spectra remain unattainable for the fainter detected population. In the past decade, the typical accuracy of photometric redshift (photo-z) determination has drastically improved. Nowdays, it has become a perfect complement to spectroscopy, closing the gap between photometric surveys and their spectroscopic follow-ups. The photo-z precision for active galactic nuclei (AGN) has always lagged behind that for the galaxy population owing to the lack of proper templates and their intrinsic variability.