  We investigate the structure and formation of charmed meson--nucleus systems,
with the aim of understanding the charmed meson--nucleon interactions and the
properties of the charmed mesons in the nuclear medium. The $\bar{D}$ mesic
nuclei are of special interest, since they have tiny decay widths due to the
absence of strong decays for the $\bar{D} N$ pair. Employing an effective model
for the $\bar{D} N$ and $D N$ interactions and solving the Klein--Gordon
equation for $\bar{D}$ and $D$ in finite nuclei, we find that the
$D^{-}$-${}^{11}\rm{B}$ system has $1 s$ and $2p$ mesic nuclear states and that
the $D^{0}$-${}^{11}\rm{B}$ system binds in a $1s$ state. In view of the
forthcoming experiments by the PANDA and CBM Collaborations at the future FAIR
facility and the J-PARC upgrade, we calculate the formation spectra of the
$[D^{-}$-${}^{11}\rm{B}]$ and $[D^{0}$-${}^{11}\rm{B}]$ mesic nuclei for an
antiproton beam on a ${}^{12} \rm{C}$ target. Our results suggest that it is
possible to observe the $2 p$ $D^{-}$ mesic nuclear state with an appropriate
experimental setup.
