A UV Survey for z~3 Galaxies

Physics

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Scientific paper

We propose to make a deep UBRI survey with the aim of using the UV dropout technique to detect z~3 Lyman-break galaxies to R~25. We require observations to U~26.5, B~26.5, R~25.5, and I~24.5 over a total area of approximately 10 deg^2, of which 2 deg^2 is to be observed at the CTIO 4-m and 2 deg^2 at the KPNO 4-m. From the observations of Steidel et al (1999) we expect a sky density of ~1 arcmin^-2 so that we shall identify ~35000 z~3 galaxies in total. VLT VIMOS, which can observe 1000 objects over a 17' fov, will provide us with the ideal opportunity for spectroscopic follow-up of these Lyman-break galaxy samples. The z~3 galaxy redshifts will allow an important application of a sensitive new redshift-space distortion test for Ω_m.

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