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arXiv 1005.4886astro-ph.SR
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Nova DZ Cru的奇特尘埃壳(2003)

The peculiar dust shell of Nova DZ Cru (2003)

A. Evans, R. D. Gehrz, C. E. Woodward, L. A. Helton, M. T. Rushton, M. F. Bode, J. Krautter, J. Lyke, D. K. Lynch, J. -U. Ness, S. Starrfield, J. W. Truran, R. M. Wagner

摘要:

我们介绍了斯皮策太空望远镜对“奇特变星”DZ Cru的观测,DZ Cru被Rushton等人(2008,MNRAS,386,289)确定为经典新星。火山爆发后约4年,在5- 35微米的范围内,一个尘埃壳,上面叠加了许多特征,是突出的。我们认为DZ Cru的尘埃主要是氢化的无定形碳,其中脂肪族带目前占主导地位,并且可能会成为主要的芳香族尘埃是由来自恒星残骸的紫外线辐射进行光处理,或更有可能被完全摧毁。

英文摘要:

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.

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