Capasso, R., Saro, A., Mohr, J. J., Biviano, A., Bocquet, S., Strazzullo, V., Grandis, S., Applegate, D. E., Bayliss, M. B., Benson, B. A., Bleem, L. E., Brodwin, M., Bulbul, E., Carlstrom, J. E., Chiu, I., Dietrich, J. P., Gupta, N., de Haan, T., Hlavacek-Larrondo, J., Klein, M., von der Linden, A., McDonald, M., Rapetti, D., Reichardt, C. L., Sharon, K. et al. 2019. "Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z = 1.3." Monthly Notices of the Royal Astronomical Society, 482 1043–1061. https://doi.org/10.1093/mnras/sty2645.
The galaxy phase-space distribution in galaxy clusters provides insights into the formation and evolution of cluster galaxies, and it can also be used to measure cluster mass profiles. We present a dynamical study based on ˜3000 passive, non-emission-line cluster galaxies drawn from 110 galaxy clusters. The galaxy clusters were selected using the Sunyaev-Zel'dovich effect (SZE) in the 2500 deg2 South Pole Telescope (SPT)-SZ survey and cover the redshift range 0.2 South Pole Telescope (SPT)-SZ survey and cover the redshift range 0.2 South Pole Telescope (SPT)-SZ survey and cover the redshift range 0.2 X measurements. However, the dynamical masses are lower (at the 2.2σ level) when compared to the mass calibration favoured when fitting the SPT cluster data to a Λcold dark matter model with external cosmological priors, including cosmic microwave background anisotropy data from Planck. The discrepancy grows with redshift, where in the highest redshift bin the ratio of dynamical to SPT Planck masses is η = 0.63^{ 0.13}_{-0.08}± 0.06 (statistical and systematic), corresponding to a 2.6σ discrepancy.
