Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How Evolved are the Mass Donor Stars inCataclysmic Variables?   Recent spectroscopic observations have identified several cataclysmic
variables non-solar metal abundances. We present theoretical models which
examine the level of core evolution expected for CV secondaries prior to
contact. Our results indicate that few secondary stars evolve past 10% of their
main sequence lifetime prior to the initiation of mass transfer; a result which
is in agreement with present day observations. Thus, the non-solar metal
abundances observed must be due to nuclear burning by-products accreted by the
secondary star during common envelope sweeping prior to initial contact or
ejecta collected during classical nova outbursts.

15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys