New insights on the dissociative merging galaxy cluster Abell 2034
  We present here new insights about the merging galaxy cluster Abell 2034
($\bar{z}=0.114$) based on a combined weak lensing and dynamical analysis. From
our deep Subaru $BR_Cz'$ images plus Gemini-GMOS/N low-resolution spectra
accompanied by available redshift data, we have obtained the individual masses
of the colliding subclusters as well as estimated a timeline of the process.
The collision event happened $0.56^{+0.15}_{-0.22}$ Gyr ago between the
subclusters A2034S ($M_{200}^S=2.35_{-0.99}^{+0.84}\times 10^{14}$ M$_{\odot}$)
and A2034N ($M_{200}^N=1.08_{-0.71}^{+0.51}\times 10^{14}$ M$_{\odot}$) with
the gas content of both subclusters displaced in relation to their galaxy and
dark matter distributions, in a scenario similar to that found in the Bullet
Cluster. Following our data and modelling the collision event is, most likely,
taking place not so far from the plane of the sky, with an angle of
$27^\circ\pm14^\circ$ in relation to that. In spite of the intrinsic degeneracy
inherent to the system (whether it has been observed incoming or outgoing), the
comparison of our calculated time since the closest approximation with the
estimated age of the observed X-ray shock front and the increment experienced
by the velocity dispersion of the galaxy cluster members points toward an
outgoing movement. Besides, we found a strong evidence for the presence of a
third structure which we called A2034W.
