Precise benchmark for cluster scaling relations

For these galaxies, we successfully measured global galaxy properties, modelled stellar populations, and created dynamical models, and support the results using detailed dynamical models of 16 galaxies, including the two most massive cluster galaxies, using data taken with the SAURON IFU.

By design, the study provides minimal scatter in derived scaling relations due to the small uncertainty in the relative distances of galaxies compared to the cluster distance. Our results demonstrate low (=<55 per cent for 90th percentile) dark matter fractions in the inner 1R_e_ of galaxies. Owing to the study design, we produce the tightest, to our knowledge, IMF-{sigma}_e_ relation of galaxies, with a slope consistent with that seen in local galaxies.