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A 3D view of the Hydra I galaxy cluster core - I. Kinematic substructures
2014
Proceedings of the International Astronomical Union
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We used FORS2 in MXU mode to mimic a coarse 'IFU' in order to measure the 3D large-scale kinematics around the central Hydra I cluster galaxy NGC 3311. Our data show that the velocity dispersion field varies as a function of radius and azimuthal angle and violates point symmetry. Also, the velocity field shows similar dependence, hence the stellar halo of NGC 3311 is a dynamically young structure. The kinematic irregularities coincide in position with a displaced diffuse halo North-East of NGC
doi:10.1017/s1743921314009715
fatcat:pzelak36tng75eb3y2p6uh3ykq