Stripping of an Ejecta Fragment in the Vela Supernova Remnant

Ejecta fragments from the nearby Vela supernova remnant provide a uniqueopportunity to examine supernova ejecta as they shock and finally merge into theinterstellar medium (ISM). Fragment D is the largest and brightest suchfeature. We propose to map the distribution of the enriched material using fourpointings covering the adjacent bow shock, the tail (including a peculiarspurshaped feature) and the adjacent SNR rim. The rim includes portions of abright irregular ring which may be part of the transient exit wound producedby the interaction of the fragment with the shell. In combination with theexisting pointing, these data will provide a much more complete picture of theinteraction of an ejecta fragment with the SNR shell and the surrounding ISM. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]