[HBG2012] J , the SIMBAD biblio

We use imaging obtained with the Hubble Space Telescope Wide Field Camera 3 to search for z₈₅₀ dropouts at z ∼ 7 and J₁₁₀dropouts at z ∼ 9 lensed by the Bullet Cluster. In total we find 10 z₈₅₀ dropouts in our 8.27 arcmin² field. Using magnification maps from a combined weak- and strong-lensing mass reconstruction of the Bullet Cluster and correcting for estimated completeness levels, we calculate the surface density and luminosity function of our z ₈₅₀ dropouts as a function of intrinsic (accounting for magnification) magnitude. We find results consistent with published blank field surveys, despite using much shallower data, and demonstrate the effectiveness of cluster surveys in the search for z ∼ 7 galaxies.