Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Stagger-grid: A grid of 3D stellar atmosphere models - IV. Limb
  darkening coefficients   We compute the emergent stellar spectra from the UV to far infrared for
different viewing angles using realistic 3D model atmospheres for a large range
in stellar parameters to predict the stellar limb darkening. We have computed
full 3D LTE synthetic spectra based on 3D radiative hydrodynamic atmosphere
models from the Stagger-grid. From the resulting intensities at different
wavelength, we derived coefficients for the standard limb darkening laws
considering a number of often-used photometric filters. Furthermore, we
calculated theoretical transit light curves, in order to quantify the
differences between predictions by the widely used 1D model atmosphere and our
3D models. The 3D models are often found to predict steeper limb darkening
compared to the 1D models, mainly due to the temperature stratifications and
temperature gradients being different in the 3D models compared to those
predicted with 1D models based on the mixing length theory description of
convective energy transport. The resulting differences in the transit light
curves are rather small; however, these can be significant for high-precision
observations of extrasolar transits, and are able to lower the residuals from
the fits with 1D limb darkening profiles. We advocate the use of the new limb
darkening coefficients provided for the standard four-parameter non-linear
power law, which can fit the limb darkening more accurately than other choices.

18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio