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On the development of infrared radiation from an expanding nova shell

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Abstract

We discuss the precipitation and growth of grains in carbon-rich nova ejecta with a view to understanding the evolution of infrared luminosity of such objects. An initial phase of rapid grain growth is followed by an extended period of slower growth due to thinning out of the expanding gas. The period of rapid grain growth is attended by an equally rapid rise of infrared luminosity which reaches a maximum and thereafter declines more slowly after grains have grown to a significant fraction of their final radius. This behaviour of luminosity and also a rapid decline of grain temperature from 2000–900 K predicted in an optically thin model is shown to be in good agreement with data for Nova Serpentis 1970. Comparison of our model calculations with observations provide tentative estimates of various parameters of interest for dust grains condensing in Nova Serpentis 1970.

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Author notes

  1. D. D. Clayton (Visiting Professor)

    Present address: Department of Space Physics and Astronomy, Rice University, 77001, Houston, Texas, USA

Authors and Affiliations

  1. Department of Applied Mathematics and Astronomy, University College, Cardiff, Wales

    D. D. Clayton (Visiting Professor) & N. C. Wickramasinghe

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  1. D. D. Clayton
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  2. N. C. Wickramasinghe
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Clayton, D.D., Wickramasinghe, N.C. On the development of infrared radiation from an expanding nova shell. Astrophys Space Sci 42, 463–475 (1976). https://doi.org/10.1007/BF01225970

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  • DOI: https://doi.org/10.1007/BF01225970

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