AbstractAn ultraviolet–visible spectrum between 300 and 450nm of a cometary meteoroid originated from 55P/Tempel-Tuttle was investigated. The spectroscopy was carried out an intensified high definition TV camera with a slit-less reflection grating during the 2001 Leonid meteor shower over Japan. A best fit calculation mixed with atoms and molecules confirmed the first discovery of N 2 + B 2 Σ u + X 2 Σ g + bands in the UV meteor spectrum. N 2 + temperature was estimated to 10,000K with a low number density of 1.55×105cm−3. We also discuss the possibility that enhanced emissions in a meteor and a train around 310nm are caused by the band head of OH A2Σ+→X2Π. Since cometary dust may have contributed organics and water to the Earth from its early period until now, OH A–X (0,0) must be investigated.


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    Title :

    Search for OH(A–X) and detection of N 2 + (B–X) in ultraviolet meteor spectrum


    Contributors:

    Published in:

    Advances in Space Research ; 39 , 4 ; 538-543


    Publication date :

    2007-03-21


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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