03-December-2006, 08:20 AM
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Senior Member
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Join Date: Sep 2003
Location: Dubh Linn
Posts: 3,624
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Quote:
Originally Posted by ozark1
Could try here http://www.asu.cas.cz/~borovic/leonid.htm
Pretty well shows the green oxygen line, various atmospheric lines and some Fe from the meteor. I'm not sure where the Na/Mg comes from but it is significant to the light intensity |
From the abstract:
Quote:
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Relative bulk abundances of Mg, Fe, Ca, and Na in Leonids are nearly CI-chondritic within the uncertainty of the method (factor of three). Smaller meteoroids tend to be poorer in sodium, which is true also for Perseids. Most meteoric vapor emissions could be reasonably well explained with the temperature of 4500 K. High temperature meteoric emissions (Ca+, Mg+) are present only in bright meteors. Leonid spectra are very rich in atmospheric emissions of O, N, and N2 – even at high altitudes and in faint meteors. These emissions are therefore not connected with meteor shock wave.
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