Abstract We present in this paper a simulation of cometary spectra between 3 and 4 μm performed by using the optical properties of various carbon-based materials measured at different temperatures in the range 300 – 520 K. In our computations we have used new laboratory data obtained for hydrogenated amorphous carbon (HAC) grains and three kinds of polycyclic aromatic hydrocarbons (PAHs). All these materials show significant features in the near IR region; however, only the synthetic spectra obtained from HAC grains show a satisfactory agreement with the profile of the cometary bands.


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    Title :

    Carbonaceous materials in cometary environments: The case of the 3–4 μm bands


    Contributors:

    Published in:

    Publication date :

    1991-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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