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We present time-lapse spectroscopy of a classical nova explosion commencing 9days after discovery. These data reveal the appearance of a transient featurein Fe II and [O I]. We explore different models for this feature and concludethat it is best explained by a circumbinary disc shock-heated following theclassical nova event. Circumbinary discs may play an important role in novae inaccounting for the absorption systems known as THEA, the transfer of angularmomentum, and the possible triggering of the nova event itself.

Classical Nova Carinae 2018: Discovery of circumbinary iron and oxygen