The peculiar dust shell of Nova DZ Cru (2003)

Abstract

We present Spitzer Space Telescope observations of the "peculiar variable" DZ Cru, identified by Rushton et al. (2008, MNRAS, 386, 289) as a classical nova. A dust shell, on which are superimposed a number of features, is prominent in the 5-35micron range some 4 years after eruption. We suggest that the dust in DZ Cru is primarily hydrogenated amorphous carbon in which aliphatic bands currently predominate, and which may either become predominantly aromatic as the dust is photo-processed by ultraviolet radiation from the stellar remnant, or more likely completely destroyed.

MNRAS letters, accepted

References in corpus (3)

• The unusual hydrocarbon emission from the early carbon star HD 100764: The connection between aromatics and aliphatics
• The Early Spectrophotometric Evolution of V1186 Scorpii (Nova Scorpii 2004 #1)
• How peculiar is the "peculiar variable" DZ Crucis (Nova Cru 2003)?

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• Solid-phase C_60 in the peculiar binary XX Oph?
• A WISE view of novae. I. The data