Arp 202: a TDG formed in a parent's extended dark matter halo?
Arp 202: a TDG formed in a parent's extended dark matter halo?
We report on H${\alpha}$ + [NII] imaging of the Arp 202 interacting pair and its tidal dwarf galaxy (TDG) candidate as well as a GMOS long slit spectrum from the TDG candidate, observed with the Gemini North telescope. Our H${\alpha}$ + [NII] imaging reveals the TDG to have an elongated …