Search for Galaxies at z>4 from a Deep Multicolor Survey

Astronomy and Astrophysics – Astrophysics

Scientific paper

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8 pages including 4 figures, invited talk to appear in The Early Universe with VLT (Springer)

Scientific paper

We present deep BVrI multicolor photometry in the field of the quasar BR1202-07 (z_{em}=4.694) aimed at selecting field galaxies at z>4. We compare the observed colors of the galaxies in the field with those predicted by spectral synthesis models including UV absorption by the intergalactic medium and we define a robust multicolor selection of galaxies at z>4. We provide spectroscopic confirmation of the high redshift QSO-companion galaxy (z=4.702) selected by our method. The first estimate of the surface density of galaxies in the redshift interval 4

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