Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LDTk: Limb Darkening Toolkit   We present a Python package LDTk that automates the calculation of custom
stellar limb darkening (LD) profiles and model-specific limb darkening
coefficients (LDC) using the library of PHOENIX-generated specific intensity
spectra by Husser et al. (2013). The aim of the package is to facilitate
analyses requiring custom generated limb darkening profiles, such as the
studies of exoplanet transits--especially transmission spectroscopy, where the
transit modelling is carried out for custom narrow passbands--eclipsing
binaries (EBs), interferometry, and microlensing events. First, LDTk can be
used to compute custom limb darkening profiles with uncertainties propagated
from the uncertainties in the stellar parameter estimates. Second, LDTk can be
used to estimate the limb-darkening-model specific coefficients with
uncertainties for the most common limb-darkening models. Third, LDTk can be
directly integrated into the log posterior computation of any pre-existing
modelling code with minimal modifications. The last approach can be used to
constrain the LD model parameter space directly by the LD profile, allowing for
the marginalization over the LD parameter space without the need to approximate
the constraint from the LD profile using a prior.

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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg