dwarf

Space & Cosmos

Evidence for a dwarf galaxy without dark matter challenges traditional galaxy formation models

FCC 224 G475 As an example of Galfit modeling. From left to right, the three panels display the original image, masked image, model, and residuals. The image shown here has three times the size of the main axis RE of the FCC 224, but the actual input image to the GALFIT includes the entire UVI chip (~155” x 75”). Credit:…