Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Post-common envelope binaries from SDSS-X: The origin of low-mass white
  dwarfs   We present the first white dwarf mass distributions of a large and
homogeneous sample of post-common envelope binaries (PCEBs) and wide white
dwarf-main sequence binaries (WDMS) directly obtained from observations. Both
distributions are statistically independent, with PCEBs showing a clear
concentration of systems towards the low-mass end of the distribution, and the
white dwarf mass distribution of wide WDMS binaries being similar to those of
single white dwarfs. Our results provide evidence that the majority of low-mass
(Mwd < 0.5Msun) white dwarfs are formed in close binaries.

34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
1
The categories of this paper are: cs