A Catalogue of Galaxies in the HDF-South: Photometry and Structural Parameters

Abstract

We describe the construction of a catalogue of galaxies in the optical field of the Hubble Deep Field South. The HDF-S observations produced WFPC2 images in U, B, V, and I, the version 1 data have been made public on 23 November 1999. The effective field of view is 4.38 arcmin${}^2$, and the 5$\sigma$ limiting magnitudes (in a FWHM aperture) are 28.87, 29.71, 30.19, 29.58 in the U, B, V and I bands, respectively. We created a catalogue for each pass-band (I${}_{814}$, V${}_{606}$, B${}_{450}$, U${}_{300}$), using simulations to account for incompleteness and spurious sources contamination. Along with photometry in all bands, we determined on the I${}_{814}$-selected catalogue (I${}_{814}<26$) structural parameters, such as a metric apparent size, derived from the petrosian radius, an asymmetry index, light concentration indexes and the mean surface brightness within the petrosian radius.

10 pages, 11 figures. Accepted for publication in A&ASS. The catalog is available in the source and at http://www.merate.mi.astro.it/~saracco/science.html

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