Scaling Laws for Galaxy Images

1 code implementation • 3 Apr 2024 • Mike Walmsley, Micah Bowles, Anna M. M. Scaife, Jason Shingirai Makechemu, Alexander J. Gordon, Annette M. N. Ferguson, Robert G. Mann, James Pearson, Jürgen J. Popp, Jo Bovy, Josh Speagle, Hugh Dickinson, Lucy Fortson, Tobias Géron, Sandor Kruk, Chris J. Lintott, Kameswara Mantha, Devina Mohan, David O'Ryan, Inigo V. Slijepevic

We then compare the downstream performance of finetuned models pretrained on either ImageNet-12k alone vs. additionally pretrained on our galaxy images.

Domain Adaptation

The Growth of Intracluster Light in XCS-HSC Galaxy Clusters from $0.1 < z < 0.5$

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

Renewal Strings for Cleaning Astronomical Databases

no code implementations • 7 Aug 2014 • Amos J. Storkey, Nigel C. Hambly, Christopher K. I. Williams, Robert G. Mann

Large astronomical databases obtained from sky surveys such as the SuperCOSMOS Sky Surveys (SSS) invariably suffer from a small number of spurious records coming from artefactual effects of the telescope, satellites and junk objects in orbit around earth and physical defects on the photographic plate or CCD.