2011/01/31 by Nicholas R. Hall, Nicholas Hall, Marusa Bradac +13 · 2 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Cluster (spacecraft) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Gamma-ray bursts and supernovae #Gravitational lens #Hubble Deep Field #Hubble space telescope #Luminosity #Luminosity function #Magnification #Optics #Physics #Redshift #Strong gravitational lensing #Telescope #Weak gravitational lensing #astro-ph.CO
paper · pdf · doi:10.1088/0004-637x/745/2/155
published as Hall et al. 2012, ApJ, 745, 155 · 12 pages, 2 tables, 9 figures. Accepted for publication in ApJ. V3: two new figures, improved calculation of intrinsic counts, better organization, added references; main results did not change significantly
arxiv created 2012/01/09 · openalex publication_date 2012/01/13 · arxiv updated 2015/03/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We use imaging obtained with the Hubble Space Telescope Wide Field Camera 3 to search for z 850 dropouts at z ∼ 7 and J 110 dropouts at z ∼ 9 lensed by the Bullet Cluster. In total we find 10 z 850 dropouts in our 8.27 arcmin 2 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.