Search for z ~ 5 galaxies

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

We report on ongoing work searching for populations of galaxies at z>5, using very deep images in V,R,I,J and Ks obtained with the VLT and the NTT, and I-band data from the ACS on the HST. These data were used to identify R-dropout Lyman Break galaxies and separate them from any lower redshift or Galactic contaminants. An initial list of two hundred good z>5 candidates were found in ten separate fields, totalling an area of about 400 square arcmin. The eventual sample will be drawn from the full data set, a factor two larger. Based on this and previous work, most of these candidates will be real z>5 galaxies, as opposed to lower-redshift interlopers and Galactic objects. We discuss the individual and statistical properties of these sources.

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