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Author:
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Gawiser, Eric; van Dokkum, Pieter G.; Herrera, David; Maza, José; Castander, Francisco; Infante, Leopoldo; Lira Teillery, Paulina; Quadri, Ryan; Toner, Ruth; Treister, Ezequiel; Megan, Urry; Altmann, Martín; Assef, Roberto; Christlein, Daniel; Coppi, Paolo; Durán, María Fernanda; Marijn, Franx; Galaz, Gaspar; Huerta, Leonor; Charles, Liu; López, Sebastián; Méndez, René; Moore, David C.; Rubio, Mónica; Ruiz, María Teresa; Sune, Toft; Sukyoung K., Yi
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Abstract:
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We present UBVRIz0 optical images taken with MOSAIC on the CTIO 4 m telescope of the 0.32 deg2 Extended
Hubble Deep Field–South. This is one of four fields comprising the MUSYC survey, which is optimized for the
study of galaxies at z ¼ 3, active galactic nucleus (AGN) demographics, and Galactic structure. Our methods used
for astrometric calibration, weighted image combination, and photometric calibration in ABmagnitudes are described.
We calculate corrected aperture photometry and its uncertainties and find through tests that these provide a significant
improvement upon standard techniques. Our photometric catalog of 62,968 objects is complete to a total magnitude of
RAB ¼ 25, with R-band counts consistent with results from the literature.We select z ’ 3 Lyman break galaxy (LBG)
candidates from their UVR colors and find a sky surface density of 1.4 arcmin 2 and an angular correlation function
w( ) ¼ (2:3 1:0) 0:8, consistent with previous findings that high-redshift Lyman break galaxies reside in massive
dark matter halos. Our images and catalogs are available online |