Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Red giant branch stars as probes of stellar populations. II. Properties
  of the newly discovered globular cluster GLIMPSE-C01   Deep near infrared photometry of the newly discovered Galactic globular
Cluster GLIMPSE-C01 is reported. We derived for the first time the metal
abundance of this object from the slope of the RGB: [Fe/H]=-1.61+/-0.14 in the
scale of Zinn (as implemented in Harris 1996), [Fe/H]=-1.44+/-0.12 in the scale
of Caretta & Gratton (1997), and [Fe/H]=-1.12+/-0.12 in the scale of Ferraro et
al. (1999). The tip and the clump of the red giant branch were used to confirm
the estimates of Kobulnicky et al. (2005), placing the cluster at D~3.7+/-0.8
kpc, behind A_v~15 mag of visual extinction. The best fit to the radial surface
brightness profile with a single-mass King's model (1962) yielded core radius
r_c=0.78 arcmin, tidal radius r_t=27 arcmin, and central concentration c=1.54.
  Finally, we estimate the number of the "missing" globulars in the central
region of the Milky Way. Based on the spatial distribution of the known
clusters, and assuming radial symmetry around the Galactic center, we conclude
that the Milky Way contains at least 10+/-3 undiscovered objects. The
distribution of known clusters in the bulge seem to resemble the orientation of
the Milky Way bar.

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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: math