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PAH’s and Silicate Emission in Nova Cen 1986

  • Craig H. Smith (a1), David K. Aitken (a1) and Patrick F. Roche (a2)

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We present 8 – 13 μm spectra (R ≃ 40) of Nova Cen 1986 (V842 Cen) on 8 occasions between days 162 and 899 after outburst, and all after the onset of dust formation. All observations were made with the UCL cooled grating array spectrometer on the 3.9m Anglo-Australian Telescope or the 2.3m ANU telescope in Australia. All but the last observation (day 899) show evidence for emission from at least two dust components; a featureless continuum (usually attributed to carbon based dust), a broad emissive component centered on 10 μm (probably "silicates"), and the 11.3 μm feature from the family of unidentified infra-red dust features (UIR’s) seen on days 271 – 687.

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Copyright

References

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Hyland, A.R. & McGregor, P., 1988, IAU #135 Interstellar Dust, in press.
Leger, A. & Puget, J.L., 1983, Astr. Astrophys 316, L5
Mitchell, R.M. & Evans, A., 1984, MNRAS, 209, 945
Roche, P.F., Aitken, D.K. & Whitmore, B., 1984, MNRAS, 211, 535
Sellgren, K., 1983, Astrophys. J., 277, 623
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Proceedings of the International Astronomical Union
  • ISSN: -
  • EISSN: 0252-9211
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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