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Dehydrogenation study of cosmic-dust analogue grains

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Il Nuovo Cimento C

Summary

New infrared and optical-absorption measurements performed on hydrogenated amorphous-carbon grains are presented. In particular, the spectral modifications produced by dehydrogenation of the samples are analysed. We interpret the observed variations in terms of an increasing dimension of the graphitic clusters disordely arranged to form carbon grains. The results support the hypothesis that the behaviour of the interstellar extinction in the ultraviolet can be attributed to dehydrogenated amorphous-carbon grains.

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Authors and Affiliations

  1. Osservatorio Astronomico di Capodimonte, Napoli

    V. Mennella, L. Colangeli, E. Bussoletti, P. Merluzzi & A. Rotundi

  2. Istituto Universitario Navale, Napoli

    E. Bussoletti

  3. Dipartimento di Inghegneria Aerospaziale, Università Federico II, Napoli

    P. Merluzzi & A. Rotundi

Authors
  1. V. Mennella
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  2. L. Colangeli
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  3. E. Bussoletti
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  4. P. Merluzzi
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  5. A. Rotundi
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Mennella, V., Colangeli, L., Bussoletti, E. et al. Dehydrogenation study of cosmic-dust analogue grains. Il Nuovo Cimento C 16, 613–617 (1993). https://doi.org/10.1007/BF02512042

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  • DOI: https://doi.org/10.1007/BF02512042

PACS 94.10.Nh

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