Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Be discs in binary systems: II. Misaligned orbits   We use a smoothed particle hydrodynamics (SPH) code to examine the effects of
misaligned binary companions on Be star discs. We systematically vary the
degree of misalignment between the disc and the binary orbit, as well as the
disc viscosity and orbital period to study their effects on the density in the
inner and outer parts of the disc. We find that varying the degree of
misalignment, the viscosity, and the orbital period affects both the truncation
radius and the density structure of the outer disc, while the inner disc
remains mostly unaffected. We also investigate the tilting of the disc in the
innermost part of the disc and find the tilt increases with radius until
reaching a maximum around 5 stellar radii. The direction of the line of nodes,
with respect to the equator of the central star, is found to be offset compared
to the orbital line of nodes, and to vary periodically in time, with a period
of half a orbital phase. We also compare the scale height of our discs with the
analytical scale height of an isothermal disc, which increases with radius as
$r^{1.5}$. We find that this formula reproduces the scale height well for both
aligned and misaligned systems but underestimates the scale height in regions
of the disc where density enhancements develop.

31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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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: comp-gas
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The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph