Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Globular Clusters and the Mira Period-Luminosity Relation   A globular cluster distance scale based on Hipparcos parallaxes of subdwarfs
has been used to derive estimates of M_K for cluster Miras, including one in
the SMC globular cluster NGC121. These lead to a zero-point of the Mira
infrared period-luminosity relation, PL(K), in good agreement with that derived
from Hipparcos parallaxes of nearby field Miras. The mean of these two
estimates together with data on LMC Miras yields an LMC distance modulus of
18.60 +/- 0.10 in evident agreement with a metallicity corrected Cepheid
modulus (18.59 +/- 0.10).
  The use of luminous AGB stars as extragalactic population indicators is also
discussed.

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The categories of this paper are: econ
10
The categories of this paper are: q-bio
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The categories of this paper are: stat
20
The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con