First results from the ALHAMBRA-Survey
Abstract
We present the first results from the ALHAMBRA survey. ALHAMBRA will cover a relatively wide area (4 square degrees) using a purposely-designed set of 20 medium-band filters, down to an homogeneous magnitude limit AB~25 in most of them, adding also deep near-infrared imaging in JHK. To this aim we are using the Calar Alto 3.5m telescope. A small area of the ALHAMBRA survey has already been observed through our complete filter set, and this allows for the first time to check all the steps of the survey, including the pipelines that have been designed for the project, the fulfilment of the data quality expectations, the calibration procedures, and the photometric redshift machinery for which ALHAMBRA has been optimised. We present here the basic results regarding the properties of the galaxy sample selected in a 15x15 square arcmin area of the ALHAMBRA-8 field, which includes approximately 10000 galaxies with precise photometric redshift measurements. In a first estimate, approximately 500 of them must be galaxies with z>2.
Keywords
Cite
@article{arxiv.0805.3319,
title = {First results from the ALHAMBRA-Survey},
author = {A. Fernandez-Soto and J. A. L. Aguerri and E. J. Alfaro and N. Benitez and T. Broadhurst and J. Cabrera-Caño and F. J. Castander and J. Cepa and M. Cerviño and D. Cristobal-Hornillos and A. Fernandez-Soto and R. M. Gonzalez Delgado and L. Infante and I. Marquez and V. J. Martinez and J. Masegosa and A. del Olmo and J. Perea and F. Prada and J. M. Quintana and S. F. Sanchez},
journal= {arXiv preprint arXiv:0805.3319},
year = {2019}
}
Comments
6 pages, 5 figures, to appear in Il Nuovo Cimento. Invited talk presented at the conference "A Century of Cosmology : Past, Present and Future" (August 27-31 2007, Venezia, Italy)