Photometric Radial Diagnostics of Hoag's Object from HST/WFPC2 Imaging

This dataset provides imaging-based radial photometric diagnostics of Hoag’s Objectderived from archival Hubble Space Telescope (HST) WFPC2 observations.The data products include radial surface-brightness profiles, F606W–F814W colorprofiles, and a diffuse-light proxy defined from the TOTAL/F814W flux ratio,all computed using azimuthally averaged circular annuli. The dataset accompanies the analysis presented in:“Hoag’s Object as a Highly Relaxed Ring Galaxy: A Testable Modular–InformationalInterpretation with Dark-Matter and IFS Diagnostics” (submitted),and is intended to support reproducibility and independent verification of theimaging-based results. Only derived products and analysis scripts are included. The original HST imagingdata are publicly available from the MAST archive. Hoag’s Object, ring galaxies, HST, WFPC2, surface photometry,diffuse light, radial profiles