First result of June Boötid meteor spectrum

Details First result of June Boötid meteor spectrum First result of June Boötid meteor spectrum

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...424l..35k&link_type=abstract

Astronomy and Astrophysics, v.424, p.L35-L38 (2004)

Astronomy and Astrophysics

Astrophysics

10

June Boötid, Meteor Spectrum, Dust Stream Resonance Theory, Solar System Abundance

Scientific paper

This paper shows the first observational result of a spectrum of a June Boötid meteor obtained by the High-Definition TV observational system. The very faint spectrum appeared at 15h 59m 29.693s on 2004 June 23 UT, which was about 5th magnitude. Wavelengths between 360-620 nm were observed, and the strong emissions of neutral atoms as MgI, FeI and NaI were identified. Emissions of single ionized atoms were not observed. The abundances of metallic atoms, their excitation temperature were obtained under the Local Thermal Equilibrium (LTE) conditions. The results, Fe/Mg = 0.15 and Na/Mg = 0.00027 suggest the possibility that the abundances of June Boötid meteor are extremely different from the solar system abundances. The excitation temperature value, 3867 ± 13 K is low in agreement with their slow moving velocity.

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