SIBELIUS-DARK: a galaxy catalogue of the Local Volume from a constrained
  realisation simulation
  We present SIBELIUS-DARK, a constrained realisation simulation of the local
volume to a distance of 200~Mpc from the Milky Way. SIBELIUS-DARK is the first
study of the \textit{Simulations Beyond The Local Universe} (SIBELIUS) project,
which has the goal of embedding a model Local Group-like system within the
correct cosmic environment. The simulation is dark-matter-only, with the galaxy
population calculated using the semi-analytic model of galaxy formation,
GALFORM. We demonstrate that the large-scale structure that emerges from the
SIBELIUS constrained initial conditions matches well the observational data.
The inferred galaxy population of SIBELIUS-DARK also match well the
observational data, both statistically for the whole volume and on an
object-by-object basis for the most massive clusters. For example, the $K$-band
number counts across the whole sky, and when divided between the northern and
southern Galactic hemispheres, are well reproduced by SIBELIUS-DARK. We find
that the local volume is somewhat unusual in the wider context of $\Lambda$CDM:
it contains an abnormally high number of supermassive clusters, as well as an
overall large-scale underdensity at the level of $\approx 5$\% relative to the
cosmic mean. However, whilst rare, the extent of these peculiarities does not
significantly challenge the $\Lambda$CDM model. SIBELIUS-DARK is the most
comprehensive constrained realisation simulation of the local volume to date,
and with this paper we publicly release the halo and galaxy catalogues at
$z=0$, which we hope will be useful to the wider astronomy community.
