TY - JOUR
T1 - Using the bullet cluster as a gravitational telescope to study z ≳ 7 Lyman break galaxies
AU - Hall, Nicholas
AU - Bradač, Maruša
AU - Gonzalez, Anthony H.
AU - Treu, Tommaso
AU - Clowe, Douglas
AU - Jones, Christine
AU - Stiavelli, Massimo
AU - Zaritsky, Dennis
AU - Cuby, Jean Gabriel
AU - Clément, Benjamin
PY - 2012/2/1
Y1 - 2012/2/1
N2 - 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 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.
AB - 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 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.
KW - galaxies: high-redshift
KW - gravitational lensing: strong
KW - gravitational lensing: weak
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U2 - 10.1088/0004-637X/745/2/155
DO - 10.1088/0004-637X/745/2/155
M3 - Article
AN - SCOPUS:84855957798
SN - 0004-637X
VL - 745
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 155
ER -