Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The VLT-FLAMES Tarantula Survey XVI. The optical+NIR extinction laws in
  30 Doradus and the photometric determination of the effective temperatures of
  OB stars   Context: The commonly used extinction laws of Cardelli et al. (1989) have
limitations that, among other issues, hamper the determination of the effective
temperatures of O and early B stars from optical+NIR photometry. Aims: We aim
to develop a new family of extinction laws for 30 Doradus, check their general
applicability within that region and elsewhere, and apply them to test the
feasibility of using optical+NIR photometry to determine the effective
temperature of OB stars. Methods: We use spectroscopy and NIR photometry from
the VLT-FLAMES Tarantula Survey and optical photometry from HST/WFC3 of 30
Doradus and we analyze them with the software code CHORIZOS using different
assumptions such as the family of extinction laws. Results: We derive a new
family of optical+NIR extinction laws for 30 Doradus and confirm its
applicability to extinguished Galactic O-type systems. We conclude that by
using the new extinction laws it is possible to measure the effective
temperatures of OB stars with moderate uncertainties and only a small bias, at
least up to E(4405-5495) ~ 1.5 mag.

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The categories of this paper are: math
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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: physics