Resolved Nebular Remnants

In this chapter, we concentrate on describing the physical characteristics and evolution of the nebular remnants of classical novae across the electromagnetic spectrum. We also refer as appropriate to the relationship between the central binary and the ejected nebula, particularly in terms of remnant shaping. Evidence for remnant structure in the spectra of unresolved novae is briefly described before moving on to discuss resolved nebular remnants, first in the optical and infrared, and then in the radio. Over the past two decades, great strides have also been made in understanding the relationship of remnant shape to the evolution of the outburst and the properties of the central binary. The results of various models are presented. Finally, we briefly discuss the idiosyncratic remnant of GK Per – an object that may provide important clues to the evolution of nova binaries – before concluding with a discussion of outstanding problems and prospects for future work.