Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revised Best Estimates for the Age and Mass of the Methuselah Star HD
  140283 using MESA and Interferometry and Implications for 1D Convection   In light of recently revised observational measurements of the radius and
spectroscopic parameters of the extremely old and metal-poor Gaia benchmark
star HD 140283 -- also known as the Methuselah star due to prior suggestions
that its age is in tension with the age of the Universe -- we present new, best
estimates for the star's mass and age from stellar modeling. These are derived
using 1D stellar evolutionary tracks computed with MESA and the most up-to-date
measurements from CHARA interferometry. Excluding modeling variance from the
uncertainties, we report a mass of $0.809 \pm 0.001 M_{\odot}$ and an age of
$12.01 \pm 0.05$ Gyr ($1 \sigma$). When dominant sources of modeling
uncertainty are taken into account, we report $0.81 \pm 0.05 M_{\odot}$ and $12
\pm 0.5$ Gyr, respectively. These results are consistent with recent
literature, and the best-fitting age is not in conflict with the currently
accepted age of the universe ($13.5$ Gyr; arXiv:1303.5089 [astro-ph.CO]).

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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ