Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thorough characterisation of the 16 Cygni system. Part II. Seismic
  inversions of the internal structure   The advent of space-based photometry observations provided high-quality
asteroseismic data for a large number of stars. These observations enabled the
adaptation of advanced techniques, until then restricted to helioseismology, to
study the best asteroseismic targets. Amongst these, the 16Cyg binary system
holds a special place, being the brightest solar twins observed by Kepler. For
this system, modellers have access to high-quality asteroseismic, spectroscopic
and interferometric data, making it the perfect testbed for the limitations of
stellar models. We aim to further constrain the internal structure and
fundamental parameters of 16CygA&B using linear seismic inversion techniques of
both global indicators and localised corrections of the internal structure. We
start from the models defined by detailed modelling in our previous paper and
extend our analysis by applying variational inversions to these models. We
carried out inversions of so-called seismic indicators and provided local
corrections of the internal structure of the two stars. Our results indicate
that linear seismic inversions alone are not able to discriminate between
standard and non-standard models for 16CygA&B. We confirm the results of our
previous studies that used linear inversion techniques, but consider that the
differences could be linked to small fundamental parameters variations rather
than to a missing process in the models. We confirm the robustness and
reliability of the results of the modelling performed in our previous paper. We
conclude that non-linear inversions are likely required to further investigate
the properties of 16CygA&B from a seismic point of view, but that these
inversions should be coupled to analyses of the depletion of light elements
such as lithium and beryllium to constrain the macroscopic transport of
chemicals and potential non-standard evolutionary paths.

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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc