Faint InfraRed Extragalactic Survey: Data and Source Catalogue of the MS1054-03 field

Details Faint InfraRed Extragalactic Survey: Data and Source Catalogue of the MS1054-03 field Faint InfraRed Extragalactic Survey: Data and Source Catalogue of the MS1054-03 field

2005-10-06

arxiv.org/abs/astro-ph/0510186v1

Astron.J.131:1891-1913,2006

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the Astronomical Journal. 32 pages, 14 b/w figures, 1 color figure

Scientific paper

10.1086/497293

We present deep near-infrared Js, H, and Ks band imaging of a field around MS1054-03, a massive cluster at z=0.83. The observations were carried out with ISAAC at the ESO VLT as part of the Faint InfraRed Extragalactic Survey (FIRES). The total integration time amounts to 25.9h in Js, 24.4h in H, and 26.5h in Ks, divided nearly equally between four pointings covering 5.5'x5.3'. The 3-sigma total limiting AB magnitudes for point sources from the shallowest to deepest pointing are Js=26.0-26.2, H=25.5-25.8, and Ks=25.3-25.7. The effective spatial resolution of the coadded images has FWHM=0.48", 0.46", and 0.52" in Js, H, and Ks. We complemented the ISAAC data with deep optical imaging using existing HST WFPC2 mosaics in the F606W and F814W filters and new U, B and V band data from VLT FORS1. We constructed a Ks-band limited multicolour source catalogue to Ks(total,AB)=25 (about 5-sigma for point sources). The catalogue contains 1858 objects, of which 1663 have eight-band photometry. We describe the observations, data reduction, source detection and photometric measurements method. We present the number counts, colour distributions, and photometric redshifts z_ph of the catalogue sources. We find that our counts at the faint end 22=0.078. The MS1054-03 field observations complement our HDF-South data set with nearly five times larger area at about 0.7 brighter magnitudes. [ABRIDGED]

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