Bibcode
Aparicio Villegas, T.; Alfaro, E. J.; Cabrera-Caño, J.; Moles, M.; Benítez, N.; Perea, J.; del Olmo, A.; Fernández-Soto, A.; Cristóbal-Hornillos, D.; Husillos, C.; Aguerri, J. A. L.; Broadhurst, T.; Castander, F. J.; Cepa, J.; Cerviño, M.; González Delgado, R. M.; Infante, L.; Márquez, I.; Masegosa, J.; Martínez, V. J.; Prada, F.; Quintana, J. M.; Sánchez, S. F.
Bibliographical reference
The Astronomical Journal, Volume 139, Issue 3, pp. 1242-1253 (2010).
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3
2010
Citations
40
Refereed citations
34
Description
This paper presents the characterization of the optical range of the
ALHAMBRA photometric system, a 20 contiguous, equal-width, medium-band
CCD system with wavelength coverage from 3500 Å to 9700 Å.
The photometric description of the system is done by presenting the full
response curve as a product of the filters, CCD, and atmospheric
transmission curves, and using some first- and second-order moments of
this response function. We also introduce the set of standard stars that
defines the system, formed by 31 classic spectrophotometric standard
stars which have been used in the calibration of other known photometric
systems, and 288 stars, flux calibrated homogeneously, from the Next
Generation Spectral Library (NGSL). Based on the NGSL, we determine the
transformation equations between Sloan Digital Sky Survey ugriz
photometry and the ALHAMBRA photometric system, in order to establish
some relations between both systems. Finally, we develop and discuss a
strategy to calculate the photometric zero points of the different
pointings in the ALHAMBRA project.
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