Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Convective-reactive nucleosynthesis of K, Sc, Cl and p-process isotopes
  in O-C shell mergers   We address the deficiency of odd-Z elements P, Cl, K and Sc in galactic
chemical evolution models through an investigation of the nucleosynthesis of
interacting convective O- and C shells in massive stars. 3D hydrodynamic
simulations of O-shell convection with moderate C-ingestion rates show no
dramatic deviation from spherical symmetry. We derive a spherically averaged
diffusion coefficient for 1D nucleosynthesis simulations which show that such
convective-reactive ingestion events can be a production site for P, Cl, K and
Sc. An entrainment rate of $10^{-3}{{\rm M}_\odot}$/s features overproduction
factors $OP_\mathrm{s} \approx 7$. Full O-C shell mergers in our 1D stellar
evolution massive star models have overproduction factors $OP_\mathrm{m}>1
\mathrm{dex}$ but for such cases 3D hydrodynamic simulations suggest deviations
from spherical symmetry. p-process species can be produced with overproduction
factors of $OP_\mathrm{m}>1 \mathrm{dex}$, e.g. for $^{130,132}Ba$. Using the
uncertain prediction of the $15{{\rm M}_\odot}$, $Z=0.02$ massive star model
($OP_\mathrm{m} \approx 15$) as representative for merger or entrainment
convective-reactive events involving O- and C-burning shells, and assume that
such events occur in more than 50% of all stars, our chemical evolution models
reproduce the observed Galactic trends of the odd-Z elements.

23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci