Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6

Details Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6 Lyman Break Galaxies and the Star Formation Rate of the Universe at z~6

2003-02-12

arxiv.org/abs/astro-ph/0302212v2

Mon.Not.Roy.Astron.Soc.342:439,2003

Astronomy and Astrophysics

Astrophysics

Accepted for publication in MNRAS; replaced with version to match published manuscript (minor typos fixed, and near-IR magnitu

Scientific paper

10.1046/j.1365-8711.2003.06546.x

We determine the space density of UV-luminous star-burst galaxies at z~6 using deep HST ACS SDSS-i' (F775W) and SDSS-z' (F850LP) and VLT ISAAC J and K_s band imaging of the Chandra Deep Field South. We find 8 galaxies and one star with (i'-z')>1.5 to a depth of z'{AB}= 25.6 (an 8-sigma detection in each of the 3 available ACS epochs). This corresponds to an unobscured star formation rate of ~15M_sun/yr/h{70}^2 at z=5.8, equivalent to L* for the Lyman break population at z =3-4 (Omega_{Lambda}=0.7, Omega_M=0.3). We are sensitive to star forming galaxies at 5.6

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