Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Survey for Low Surface Brightness Galaxies Around M31. II. The Newly
  Discovered Dwarf Andromeda VI   We present B-, V-, and I-band images, as well as an H alpha image, of And VI.
This is the second newly identified dwarf spheroidal (dSph) companion to M31
found using a digital filtering technique applied to the second Palomar Sky
Survey for which 1550 square degrees now have been surveyed. And VI was
confirmed to be a nearby dSph galaxy when it resolved into stars easily with a
short 4-m V-band exposure. Sub-arcsec images taken at the Kitt Peak WIYN 3.5-m
telescope provided (I,V-I) and (V,B-V) color-magnitude diagrams that yield a
distance of 775 +/- 35 kpc using the tip of the red giant branch method, and a
mean metallicity of [Fe/H] = -1.58 +/- 0.20 with a dispersion of approximately
0.3 dex. And VI has a galactocentric distance of approximately 271 kpc and an
absolute V magnitude of -11.3. All observed properties of And VI are consistent
with its classification as a dSph companion to M31. Despite the recent
identification of the And V, And VI, and Cas dwarfs, the Local Group luminosity
function remains highly deficient in faint galaxies relative both to CDM
simulations of its formation, and to the luminosity functions for richer
clusters of galaxies.

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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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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: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org