Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single degenerate supernova type Ia progenitors   There is general agreement that supernovae Ia correspond to the thermonuclear
runaway of a white dwarf that is part of a compact binary, but the details of
the progenitor systems are still unknown and much debated. One of the proposed
progenitor theories is the single-degenerate channel in which a white dwarf
accretes from a companion, grows in mass, reaches a critical mass limit, and is
then consumed after thermonuclear runaway sets in. However, there are major
disagreements about the theoretical delay time distribution and the
corresponding time-integrated supernova Ia rate from this channel. We
investigate whether the differences are due to the uncertainty in the common
envelope phase and the fraction of transferred mass that is retained by the
white dwarf. This so-called retention efficiency may have a strong influence on
the final amount and timing of supernovae Ia. Using the population synthesis
code SeBa, we simulated large numbers of binaries for various assumptions on
common envelopes and retention efficiencies. We compare the resulting supernova
Ia rates and delay time distributions with each other and with those from the
literature, including observational data. For the three assumed retention
efficiencies, the integrated rate varies by a factor 3-4 to even more than a
factor 100, so in extreme cases, the retention efficiency strongly suppresses
the single-degenerate channel. Our different assumptions for the common
envelope phase change the integrated rate by a factor 2-3. Although our results
do recover the trend in the theoretical predictions from different binary
population synthesis codes, they do not fully explain the large disagreement
among them.

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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
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The categories of this paper are: econ
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
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The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga