With the "post-processing" technique we explore the role of the convective
overshooting on the production of s-nuclei in stellar models of different
initial mass and metallicity (15≤MZAMS/M⊙≤25; 10−4≤Z≤0.02), considering a range of values for the parameter f, which
determines the overall efficiency of convective overshooting.We find
enhancements in the production of s-nuclei until a factor ∼6 (measured as
the average overproduction factor of the 6 s-only nuclear species with
60≲A≲90) in all our models of different initial mass and
metallicity with f in the range 0.01−0.035 (i.e. models with
overshooting) compared to the production obtained with "no-overshooting" models
(i.e. models with the same initial mass and metallicity, but f=10−5).
Moreover the results indicate that the link between the overshooting parameter
f and the s-process efficiency is essentially monotonic in all our models of
different initial mass and metallicity. Also evident is the higher s-process
efficiency when we progressively increase for a given f value both the mass of
the models from 15 M⊙ to 25 M⊙ and the Z value from 10−4 to
0.02. We also briefly discuss the possible consequences of these results for
some open questions linked to the s-process weak component efficiency, as well
as a "rule of thumb" to evaluate the impact of the convective overshooting on
the yields of a generation of stars.Comment: 12 pages, 6 figures, A&A accepted (corrected typos plus minor changes
in order to fulfill the guidelines for A&A manuscripts