The SAMI Galaxy Survey: The cluster redshift survey, target selection
  and cluster properties
  We describe the selection of galaxies targeted in eight low redshift clusters
(APMCC0917, A168, A4038, EDCC442, A3880, A2399, A119 and A85; $0.029 < z <
0.058$) as part of the Sydney-AAO Multi-Object integral field Spectrograph
Galaxy Survey (SAMI-GS). We have conducted a redshift survey of these clusters
using the AAOmega multi-object spectrograph on the 3.9m Anglo-Australian
Telescope. The redshift survey is used to determine cluster membership and to
characterise the dynamical properties of the clusters. In combination with
existing data, the survey resulted in 21,257 reliable redshift measurements and
2899 confirmed cluster member galaxies. Our redshift catalogue has a high
spectroscopic completeness ($\sim 94\%$) for $r_{\rm petro} \leq 19.4$ and
clustercentric distances $R< 2\rm{R}_{200}$. We use the confirmed cluster
member positions and redshifts to determine cluster velocity dispersion,
$\rm{R}_{200}$, virial and caustic masses, as well as cluster structure. The
clusters have virial masses $14.25 \leq {\rm log }({\rm
M}_{200}/\rm{M}_{\odot}) \leq 15.19$. The cluster sample exhibits a range of
dynamical states, from relatively relaxed-appearing systems, to clusters with
strong indications of merger-related substructure. Aperture- and PSF-matched
photometry are derived from SDSS and VST/ATLAS imaging and used to estimate
stellar masses. These estimates, in combination with the redshifts, are used to
define the input target catalogue for the cluster portion of the SAMI-GS. The
primary SAMI-GS cluster targets have $R< \rm{R}_{200}$, velocities $|v_{\rm
pec}| < 3.5\sigma_{200}$ and stellar masses $9.5 \leq {\rm
log(M}^*_{approx}/\rm{M}_{\odot}) \leq 12$. Finally, we give an update on the
SAMI-GS progress for the cluster regions.
