Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Distribution of Secondary Masses in Post-Common Envelope Binaries: A
  Potential Test of Disrupted Magnetic Braking   The distribution of secondary star masses in present-day post-common envelope
binaries (PCEBs) is calculated using four different models for angular momentum
loss (AML) during the post-CE phase: only gravitational radiation (GR), GR +
disrupted magnetic braking (DMB), GR + reduced MB, and GR + intermediate MB.
For the DMB model, we find that the number of PCEBs decreases abruptly by 38%
once MB begins to operate for non-fully convective secondaries. We do not find
a similar feature in the distributions calculated using any of the other three
AML models in which MB is not disrupted. This percentage decrease in the number
of present-day PCEBs predicted using the DMB model is easily large enough so
that an observed distribution of secondary masses or even spectral types in
PCEBs can provide an important test of whether magnetic braking is indeed
substantially reduced in secondary stars that are fully convective. We discuss
briefly the feasibility of such observations.

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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: math