# # Program information file # PROGRAM_ID 2021A012 PROGRAM_TITLE The late stage IR spectroscopic study of novae: The last chapters. PROGRAM_INV1 Chick Woodward PROGRAM_INV2 Aneurin Evans PROGRAM_INV3 Dipankar P.K. Banerjee PROGRAM_INV4 Hideyo Kawakita PROGRAM_INV5 PROGRAM_SCICAT stellar PROGRAM_ABSTRACT_BEG Novae are time variable phenomena the permit the study of the evolution of molecules, dust composition and metal abundances in explosive environments associated with thermonuclear runways on white dwarfs. Synoptic observations over several 100 days are necessary to capture a complete understanding a given event, which taken in aggregate advance the fundamental physics and chemistry of these events that effect abundance enrichment of the interstellar medium. We propose to study four classical novae as they return to quiescence to bookend our observations obtained a few 10s of days post-outburst in 2020A. The objectives are to study of the IR line profiles, investigate the evolution of the IR coronal line mission from metals and assess whether dust has formed in the ejecta. Select new, recently discovered novae may also be targeted if there is a likelihood of CO molecular formation early [less than 20 days] in the ejecta. PROGRAM_ABSTRACT_END