Uncovering the Ghostly Remains of an Extremely Diffuse Satellite in the Remote Halo of NGC 253*
Uncovering the Ghostly Remains of an Extremely Diffuse Satellite in the Remote Halo of NGC 253*
Abstract We present the discovery of NGC253-SNFC-dw1, a new satellite galaxy in the remote stellar halo of the Sculptor Group spiral, NGC 253. The system was revealed using deep, resolved star photometry obtained as part of the Subaru Near-Field Cosmology Survey that uses the Hyper Suprime-Cam on the Subaru Telescope. …