Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Line-driven ablation of circumstellar discs: III. Accounting for and
  analyzing the effects of continuum optical depth   In studying the formation of massive stars, it is essential to consider the
strong radiative feedback on the stars' natal environments from their high
luminosities ($10^4 \sim 10^6 L_\odot$). Given that massive stars contract to
main-sequence-like radii before accretion finishes, one form this feedback
takes is UV line-acceleration, resulting in outflows much like those expected
from main-sequence massive stars. As shown by the prior papers in this series,
in addition to driving stellar winds, such line forces also ablate the surface
layers off of circumstellar discs within a few stellar radii of the stellar
photosphere. This removal of material from an accretion disc in turn results in
a decreased accretion rate onto the forming star. Quantifying this, however,
requires accounting for the continuum optical depth of the disc along the
non-radial rays required for the three-dimensional line-acceleration
prescription used in this paper series. We introduce the "thin disc
approximation", allowing these continuum optical depths arising from an
optically thick but geometrically thin disc to be dynamically treated in the
context of radiation-hydrodynamics simulations. Using this approximation in
full dynamical simulations, we show that such continuum optical depth effects
only reduce the disc ablation by 30 percent or less relative to previous
simulations that ignored continuum absorption.

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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat