Benitez, NarcisoBroadhurst, TomRosati, PieroCourbin, FredSquires, GordonLidman, ChrisMagain, Pierre2026-01-012026-01-010004-637XBibtex:1999ApJ...527...31Bhttps://hdl.handle.net/1885/73380074011COSMOLOGY: DARK MATTERGALAXIES: CLUSTERS: GENERALGALAXIES: PHOTOMETRYCOSMOLOGY: GRAVITATIONAL LENSINGX-RAYS: GALAXIESCosmology: Dark MatterGalaxies: Clusters: GeneralGalaxies: PhotometryCosmology: Gravitational LensingX-Rays: GalaxiesAstrophysicsDeep Imaging of AX J2019+112: The Luminosity of a ``Dark Cluster''1999-12-0110.1086/3080530040944106