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Figure 1: The normalized system efficiencies (NSEs). The solid curve indicates the NSE of the HDTV spectroscopic observational system onboard with the grating of 600 grooves/mm (blaze 300 nm), calibrated with Jupiter. |
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Figure 2:
Time variation of the spectra of the representative Leonid
meteor observed at
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Figure 3:
An example of the reduced spectrum (narrow line) at 0.165 s.
The meteor spectrum was obtained by subtracting the blackbody radiation
from the observed spectrum. Dotted lines are the best fit models by
neutral atomic emissions of 358, 374, 383, 404, 423, 438, 518 and
589 nm. The excitation temperature of this frame is
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Figure 4:
Time variations of the excitation temperature (thick line),
blackbody temperature (thin line) and electron density (dotted line).
The 374 nm (FeI) and 383 nm (MgI, FeI) lines were saturated at
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Figure 5:
Time variation of the abundances of Mg, Fe, Ca and Na relative
to Mg. The solar abundances (Anders & Grevesse 1989) of Fe, Ca, Na and Mg are
shown by the horizontal lines. The 374 nm (FeI) and 383 nm (MgI, FeI)
lines were saturated by the strong meteor emissions at
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Figure 6: The abundances of the metallic elements Fe, Ca and Na relative to Mg vs. the excitation temperature. |
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