Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double degenerates and progenitors of supernovae type Ia   We report on systematic radial velocity surveys for white dwarf - white dwarf
binaries (double degenerates - DDs) including SPY (ESO Supernovae Ia progenitor
survey) recently carried out at the VLT. A large sample of DD will allow us to
put strong constrains on the phases of close binary evolution of the progenitor
systems and to perform an observational test of the DD scenario for supernovae
of type Ia. We explain how parameters of the binaries can be derived from
various methods. Results for a sample of DDs are presented and discussed.

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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: cs
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The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat