Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-Infrared Observations of RR Lyrae variables in Galactic Globular
  Clusters: I. The case of M92   We present near-infrared J,H, and K-band time series observations of the
Galactic Globular Cluster (GGC) M92. On the basis of these data, we derived
well-sampled light curves for eleven out of the seventeen cluster RR Lyrae
variables, and in turn, accurate mean near-infrared (NIR) magnitudes. The
comparison between predicted and empirical slopes of NIR Period-Luminosity (PL)
relations indicates a very good agreement. Cluster distance determinations
based on independent theoretical NIR $PL$ relations present uncertainties
smaller than 5% and agree quite well with recent distance estimates based on
different distance indicators. We also obtained accurate and deep NIR
color-magnitude diagrams (CMDs) ranging from the tip of the Red Giant Branch
(RGB) down to the Main Sequence Turn-Off. We detected the RGB bump and the NIR
luminosities of this evolutionary feature are, within theoretical and empirical
uncertainties, in good agreement with each other.

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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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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: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci