Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CCD UBV(RI)KC Photometry of the Open Clusters Juchert 9 and Berkeley 97   The CCD UBV(RI)KC photometry of the poorly studied open clusters Juchert 9
(Juc 9) and Berkeley 97 (Be 97), which are observed with the 0.84 m telescope
at the San Pedro M\'artir National Observatory, M\'exico has been analysed. For
the likely cluster members, we determined the reddenings, E(B-V)=0.82 +- 0.04
(Juc 9) and E(B-V)=0.87 +- 0.05 (Be 97), from the early type stars. Our
distance moduli/distances for only (B - V) colour are (Vo-Mv , d(kpc)) = (13.40
+- 0.10, 4.8 +- 0.2 kpc) (Juc 9) and (12.40 +- 0.12, 3.0 +- 0.2 kpc) (Be 97),
respectively. The Gaia DR2 distances are d = 4.5 +- 1.2 kpc (Juc 9) and d = 3.1
+- 0.7 kpc (Be 97) from the median parallaxes with relative parallaxes < 0.20,
which are in good agreement with the photometric distances within the
uncertainties. The solar abundance PARSEC isochrones give us the intermediate
ages, 30 +- 10 Myr for Juc 9 and 100 +- 30 Myr for Be 97.

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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin