Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultra-deep Large Binocular Camera U-band Imaging of the GOODS-North
  Field: Depth vs. Resolution   We present a study of the trade-off between depth and resolution using a
large number of U-band imaging observations in the GOODS-North field
(Giavalisco et al. 2004) from the Large Binocular Camera (LBC) on the Large
Binocular Telescope (LBT). Having acquired over 30 hours of data (315 images
with 5-6 mins exposures), we generated multiple image mosaics, starting with
the best atmospheric seeing images (FWHM $\lesssim$0.8"), which constitute
$\sim$10% of the total data set. For subsequent mosaics, we added in data with
larger seeing values until the final, deepest mosaic included all images with
FWHM $\lesssim$1.8" ($\sim$94% of the total data set). From the mosaics, we
made object catalogs to compare the optimal-resolution, yet shallower image to
the lower-resolution but deeper image. We show that the number counts for both
images are $\sim$90% complete to $U_{AB}$ $\lesssim26$. Fainter than
$U_{AB}$$\sim$ 27, the object counts from the optimal-resolution image start to
drop-off dramatically (90% between $U_{AB}$ = 27 and 28 mag), while the deepest
image with better surface-brightness sensitivity ($\mu^{AB}_{U}$$\lesssim$ 32
mag arcsec$^{-2}$) show a more gradual drop (10% between $U_{AB}$ $\simeq$ 27
and 28 mag). For the brightest galaxies within the GOODS-N field, structure and
clumpy features within the galaxies are more prominent in the
optimal-resolution image compared to the deeper mosaics. Finally, we find - for
220 brighter galaxies with $U_{AB}$$\lesssim$ 24 mag - only marginal
differences in total flux between the optimal-resolution and lower-resolution
light-profiles to $\mu^{AB}_{U}$$\lesssim$ 32 mag arcsec$^{-2}$. In only 10% of
the cases are the total-flux differences larger than 0.5 mag. This helps
constrain how much flux can be missed from galaxy outskirts, which is important
for studies of the Extragalactic Background Light.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
2
The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn