Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The dwarf galaxy population of the Coma cluster to M_R=-11   We present the luminosity function (LF) and measurements of the scalelengths,
colours, and radial distribution of dwarf galaxies in the Coma cluster down to
R=24. Our survey area is 674 arcmin^2; this is the deepest and most detailed
survey covering such a large area. Our measurements agree with those of most
previous authors at bright and intermediate magnitudes. The new results are: 1)
Galaxies in the Coma cluster have a luminosity function that is steep (\alpha
\sim -1.7) for -15 < M_R < -11, and is shallower brighter than this. The
curvature in the LF at M_R \sim -15 is statistically significant. 2) The
galaxies that contribute most strongly to the luminosity function at -14 < M_R
< -12 have colours and scalelengths that are consistent with those of local
dwarf spheroidal galaxies placed at the distance of Coma. 3) These galaxies
with -14 < M_R < -12 have a colour distribution that is very strongly peaked at
B-R = 1.3. This is suggestive of a substantial degree of homogeneity in their
star formation histories and metallicities. 4) These galaxies with -14 < M_R <
-12 also appear to be more confined to the cluster core (r \sim 200 kpc) than
the brighter galaxies.

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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an