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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2005

The VIRMOS deep imaging survey IV: Near-infrared observations

B. Garilli
O. Le Fevre
P. Saracco
  • Fonction : Auteur
S. Bardelli
L. Paioro
  • Fonction : Auteur
J. P. Picat
  • Fonction : Auteur
L. Tresse
G. Vettolani
  • Fonction : Auteur
T. Contini
L. Guzzo
  • Fonction : Auteur
B. Marano
  • Fonction : Auteur
S. Paltani
R. Pello
  • Fonction : Auteur
G. Zamorani
E. Zucca
M. Bondi
O. Cucciati
G. Mathez
  • Fonction : Auteur
D. Rizzo
  • Fonction : Auteur

Résumé

In this paper we present a new deep, wide-field near-infrared imaging survey. Our J- and K-band observations in four separate fields complement optical BVRI, ultraviolet and spectroscopic observations undertaken as part of the VIMOS-VLT deep survey (VVDS). In total, our survey spans ~400arcmis^2. Our catalogues are reliable in all fields to at least Kvega~20.75 and Jvega~21.50 (defined as the magnitude where object contamination is less than 10% and completeness greater than 90%). Taken together these four fields represents a unique combination of depth, wavelength coverage and area. We describe the complete data reduction process and outline a comprehensive series of tests carried out to characterise the reliability of the final catalogues. We compare the statistical properties of our catalogues with literature compilations. We find that our J- and K-selected galaxy counts are in good agreement with previously published works, as are our (J-K) versus K colour-magnitude diagrams. Stellar number counts extracted from our fields are consistent with a synthetic model of our galaxy. Using the location of the stellar locus in colour-magnitude space and the measured field-to-field variation in galaxy number counts we demonstrate that the absolute accuracy of our photometric calibration is at the 5% level or better. Finally, an investigation of the angular clustering of K- selected extended sources in our survey displays the expected scaling behaviour with limiting magnitude, with amplitudes in each magnitude bin in broad agreement with literature values.

Dates et versions

hal-00014431 , version 1 (25-11-2005)

Identifiants

Citer

A. Iovino, H. J. Mccracken, B. Garilli, Sylvie Foucaud, O. Le Fevre, et al.. The VIRMOS deep imaging survey IV: Near-infrared observations. Astronomy and Astrophysics - A&A, 2005, 442, pp.423. ⟨10.1051/0004-6361:20052993⟩. ⟨hal-00014431⟩
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