The unusual Nova Cygni 2006 (V2362 Cygni)

Abstract

Context.Optical nova lightcurves often have structures, such as rapid declines and recoveries, due to nebular or dusty phases of the ejecta. Nova Cygni 2006 (V2362 Cyg) underwent an unusual brightening after an early rapid decline. The shape of the lightcurve can be compared to that of V1493 Aql, but in that case the whole event was not as bright and only lasted a couple of weeks. V2362 Cyg had a moderately fast decline of t2 = 9.0±0.5 days before rebrightening, which lasted 250 days after maximum.