  The ground-state properties of nuclei with 8 $\le$ Z $\le$ 120 from the
proton drip line to the neutron drip line have been investigated using the
relativistic continuum Hartree-Bogoliubov (RCHB) theory with the relativistic
density functional PC-PK1. With the effects of the continuum included, there
are totally 9035 nuclei predicted to be bound, which largely extends the
existing nuclear landscapes predicted with other methods. The calculated
binding energies, separation energies, neutron and proton Fermi surfaces,
root-mean-square (rms) radii of neutron, proton, matter, and charge
distributions, ground-state spins and parities are tabulated. The extension of
the nuclear landscape obtained with RCHB is discussed in detail, in particular
for the neutron-rich side, in comparison with the relativistic mean field
calculations without pairing correlations and also other predicted landscapes.
It is found that the coupling between the bound states and the continuum due to
the pairing correlations plays an essential role in extending the nuclear
landscape. The systematics of the separation energies, radii, densities,
potentials and pairing energies of the RCHB calculations are also discussed. In
addition, the alpha-decay energies and proton emitters based on the RCHB
calculations are investigated.
