no code implementations • 5 Jan 2021 • Kate E. Furnell, Chris A. Collins, Lee S. Kelvin, Ivan K. Baldry, Phil A. James, Maria Manolopoulou, Robert G. Mann, Paul A. Giles, Alberto Bermeo, Matthew Hilton, Reese Wilkinson, A. Kathy Romer, Carlos Vergara, Sunayana Bhargava, John P. Stott, Julian Mayers, Pedro Viana
We find that the ICL makes up about $\sim$ 24% of the total cluster stellar mass on average ($\sim$ 41% including the flux contained in the BCG within 50 kpc); this value is well-matched with other observational studies and semi-analytic/numerical simulations, but is significantly smaller than results from recent hydrodynamical simulations (even when measured in an observationally consistent way).
Astrophysics of Galaxies
no code implementations • 20 Jun 2019 • Matthew C. Chan, John P. Stott
We introduce Deep-CEE (Deep Learning for Galaxy Cluster Extraction and Evaluation), a proof of concept for a novel deep learning technique, applied directly to wide-field colour imaging to search for galaxy clusters, without the need for photometric catalogues.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
