  We present precise radiative data of line strengths, transition probabilities
and oscillator strengths for the allowed transitions among the $nS_{1/2}$,
$nP_{1/2,3/2}$, $n'D_{3/2,5/2}$ and $n'F_{5/2,7/2}$ states with $n=4$ to $6$
and $n'=4,5$ of the Cu-isoelectronic As, Se and Br ions. Due to unavailability
of precise observations of these spectroscopic data, their accurate estimations
are of great interest and useful in analyzing various astrophysical phenomena
undergoing inside the heavenly bodies that contain As, Se and Br elements. An
all-order perturbative many-body method in the relativistic theory framework
has been employed to determine the atomic wave functions, which are further
used to estimate the above quantities with the uncertainties. We found
significant differences between some of our results and results that are
available earlier.
