  We make a theoretical study of the s-wave interaction of the nonet of vector
mesons with the octet of pseudoscalar mesons starting from a chiral invariant
Lagrangian and implementing unitarity in coupled channels. By looking for poles
in the unphysical Riemann sheets of the unitarized scattering amplitudes, we
get two octets and one singlet of axial-vector dynamically generated
resonances. The poles found can be associated to most of the low lying
axial-vector resonances quoted in the Particle Data Book: $b_1(1235)$,
$h_1(1170)$, $h_1(1380)$, $a_1(1260)$, $f_1(1285)$ and two poles to the
$K_1(1270)$ resonance. We evaluate the couplings of the resonances to the $VP$
states and the partial decay widths in order to reinforce the arguments in the
discussion.
