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Quasi-stellar objects in the ALHAMBRA survey: I. Photometric redshift accuracy based on 23 optical-NIR filter photometry

Opened Access Quasi-stellar objects in the ALHAMBRA survey: I. Photometric redshift accuracy based on 23 optical-NIR filter photometry

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Autor: Cabrera Caño, Jesús María
Matute, I.
Márquez, I.
Husillos, C.
Del Olmo, A.
Perea, J.
Alfaro, E.J.
Fernández Soto, A.
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2012
Publicado en: Astronomy and Astrophysics, 542, 1-17.
Tipo de documento: Artículo
Resumen: Context. Even the spectroscopic capabilities of today's ground and space-based observatories can not keep up with the enormous flow of detections (>10 5 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. Aims. Our goal is to characterize the ability of the Advanced Large, Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey in assigning accurate photo-z's to broad-line AGN (BLAGN) an...
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Cita: Cabrera Caño, J.M., Matute, I., Márquez, I., Husillos, C., Del Olmo, A., Perea, J.,...,Fernández Soto, A. (2012). Quasi-stellar objects in the ALHAMBRA survey: I. Photometric redshift accuracy based on 23 optical-NIR filter photometry. Astronomy and Astrophysics, 542, 1-17.
Tamaño: 1.333Mb
Formato: PDF

URI: http://hdl.handle.net/11441/64272

DOI: 10.1051/0004-6361/201118111

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