Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Effects of an Early Galactic Wind on the Evolution of D, \he3 and Z   The predictions of the abundances of D and \he3 from Big Bang Nucleosynthesis
(BBN) and recent observations of these two isotopes suggest the need to develop
new chemical evolution models. In particular, we examine the role of an early
episode of massive star formation that would induce a strong destruction of D
and a galactic wind. We discuss the ability of these models to match the
observed local properties of the solar neighborhood such as the gas mass
fraction, oxygen abundance, the age-metallicity relation, and the present-day
mass function (PDMF). We also examine in detail the ability of the chemical
evolution models discussed to reproduce the apparent lack of low mass, low
metallicity stars in the solar neighborhood, namely the G-dwarf distribution.
Indeed, we find models which satisfy the above constraints while at the same
time allowing for a large primordial D/H ratio as is reportedly measured in
some quasar absorption systems at high $z$, without the overproduction of heavy
elements. The latter constraint is achieved by employing a simple dynamical
model for a galactic wind.

28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics