EDP Sciences
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Volume 482, Number 1, April IV 2008
Page(s) 81 - 95
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20078526
Published online 25 February 2008

A&A 482, 81-95 (2008)
DOI: 10.1051/0004-6361:20078526

The VIMOS VLT deep survey

The K-band follow-up in the 0226-04 field
S. Temporin1, 2, A. Iovino2, M. Bolzonella3, H. J. McCracken4, 5, M. Scodeggio6, B. Garilli6, D. Bottini6, V. Le Brun7, O. Le Fèvre7, D. Maccagni6, J. P. Picat8, R. Scaramella9, 10, L. Tresse7, G. Vettolani9, A. Zanichelli9, C. Adami7, S. Arnouts7, S. Bardelli3, A. Cappi3, S. Charlot11, 4, P. Ciliegi3, T. Contini8, O. Cucciati2, 12, S. Foucaud13, P. Franzetti6, I. Gavignaud14, L. Guzzo2, O. Ilbert15, B. Marano16, C. Marinoni17, A. Mazure7, B. Meneux2, 6, R. Merighi3, S. Paltani18, 19, R. Pellò8, A. Pollo7, 17, L. Pozzetti3, M. Radovich20, D. Vergani6, G. Zamorani3, E. Zucca3, M. Bondi9, A. Bongiorno16, J. Brinchmann21, S. de la Torre7, F. Lamareille8, Y. Mellier4, 5, and C. J. Walcher7

1  Laboratoire AIM, CEA/DSM - CNRS - Université Paris Diderot, IRFU/SAp, 91191 Gif-sur-Yvette, France
    e-mail: sonia.temporin@cea.fr
2  INAF - Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy
3  INAF - Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy
4  Institut d'Astrophysique de Paris, UMR 7095, 98 bis Bvd Arago, 75014 Paris, France
5  Observatoire de Paris, LERMA, 61 Avenue de l'Observatoire, 75014 Paris, France
6  IASF-INAF, via Bassini 15, 20133 Milano, Italy
7  Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, France
8  Laboratoire d'Astrophysique de Toulouse/Tabres (UMR5572), CNRS, Université Paul Sabatier, Toulouse III, Observatoire Midi-Pyrénées, 14 Av. E. Belin, 31400 Toulouse, France
9  IRA-INAF, via Gobetti 101, 40129 Bologna, Italy
10  INAF - Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
11  Max Planck Institut fur Astrophysik, 85741 Garching, Germany
12  Universitá di Milano-Bicocca, Dipartimento di Fisica, Piazza delle Scienze 3, 20126 Milano, Italy
13  School of Physics & Astronomy, University of Nottingham, University Park, Nottingham, NG72RD, UK
14  Astrophysical Institute Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
15  Institute for Astronomy, 2680 Woodlawn Dr., University of Hawaii, Honolulu, Hawaii 96822, USA
16  Università di Bologna, Dipartimento di Astronomia, via Ranzani 1, 40127 Bologna, Italy
17  Centre de Physique Théorique, UMR 6207 CNRS-Université de Provence, 13288 Marseille, France
18  Integral Science Data Centre, Ch. d'Écogia 16, 1290 Versoix, Switzerland
19  Geneva Observatory, Ch. des Maillettes 51, 1290 Sauverny, Switzerland
20  INAF - Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy
21  Centro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal

(Received 22 August 2007 / Accepted 1 February 2008)

Aims. We present a new $K_{\rm s}$-band survey that represents a significant extension to the previous wide-field $K_{\rm s}$-band imaging survey within the 0226-04 field of the VIMOS-VLT deep survey (VVDS). The new data add ~458 arcmin2 to the previous imaging program, thus allowing us to cover a total contiguous area of ~600 arcmin2 within this field.
Methods. Sources were identified both directly on the final K-band mosaic image and on the corresponding, deep $\chi^2-g^{\prime}r^{\prime}i^{\prime}$ image from the CFHT Legacy Survey in order to reduce contamination, while ensuring compilation of a truly K-selected catalogue down to the completeness limit of the $K_{\rm s}$-band. The newly determined $K_{\rm s}$-band magnitudes are used in combination with the ancillary multiwavelength data for determining accurate photometric redshifts.
Results. The final catalogue totals ~52 000 sources, out of which ~4400 have a spectroscopic redshift from the VVDS first epoch survey. The catalogue is 90% complete down to $K_{{\rm Vega}}$ = 20.5 mag. We present $K_{\rm s}$-band galaxy counts and angular correlation function measurements down to this magnitude limit. Our results are in good agreement with previously published work. We show that using K magnitudes to determine photometric redshifts significantly lowers the incidence of catastrophic errors. The data presented in this paper are publicly available through the CENCOS database.

Key words: infrared: galaxies -- galaxies: general -- surveys -- cosmology: large-scale structure of Universe

© ESO 2008