Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MPS-ATLAS: A fast all-in-one code for synthesising stellar spectra   Context. Stellar spectral synthesis is essential for various applications,
ranging from determining stellar parameters to comprehensive stellar
variability calculations. New observational resources as well as advanced
stellar atmosphere modelling, taking three dimensional (3D) effects from
radiative magnetohydrodynamics calculations into account, require a more
efficient radiative transfer.
  Aims. For accurate, fast and flexible calculations of opacity distribution
functions (ODFs), stellar atmospheres and stellar spectra we developed an
efficient code building on the well-established ATLAS9 code. The new code also
paves the way for an easy and fast access to different elemental compositions
in stellar calculations.
  Methods. For the generation of ODF tables we further developed the
well-established DFSYNTHE code by implementing additional functionality, and a
speed-up by employing a parallel computation scheme. In addition, the line
lists used can be changed from Kurucz's recent lists. In particular, we
implemented the VALD3 line list.
  Results. A new code, the Merged Parallelised Simplified ATLAS is presented.
It combines the efficient generation of ODF, atmosphere modelling and spectral
synthesis in local thermodynamic equilibrium, therefore being an all-in-one
code. This all-in-one code provides more numerical functionality and is
substantially faster compared to other available codes. The fully portable
MPS-ATLAS code is validated against previous ATLAS9 calculations, the PHOENIX
code calculations, and high quality observations.

34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
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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: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-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: plasm-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol