Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Galaxy Luminosity Function at z~1 in the HUDF: Probing the Dwarf
  Population   We present a catalog of spectro-photometric redshifts for 1308 galaxies from
the GRism ACS Program for Extragalactic Science (GRAPES) observations with the
Hubble Space Telescope. These low-resolution spectra between 6000 A and 9500 A
are supplemented with U, J, H, and Ks from various facilities, resulting in
redshifts computed with ~40 spectral bins per galaxy. For 81 galaxies between
0.5<z<1.5 with spectroscopic redshifts, the standard deviation in the
fractional error in (1+z) is 0.046. With this catalog, we compute the B-band
luminosity function in this redshift range from 72 galaxies. Owing to the depth
of the GRAPES survey, we are able to accurately constrain the faint-end slope
by going to M_B~-18 mag at 0.8<z<1.2, nearly two magnitudes fainter than
previous studies. The faint-end slope is alpha=-1.32+-0.07. When compared to
numerous published values at various redshifts, we find strong evidence for a
steepening of the faint-end slope with redshift which is expected in the
hierarchical formation scenario of galaxies.

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The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
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The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph