Table 1
Radiative-transfer fit parameters and pre-correction relative abundances for ACH1, ACH2, and a reference ordinary chondrite.
| Meteor | M20241012_113432 (ACH2, eucrite) | M20231120_114953 (ACH1, aubrite) | M20240807_093858 (ordinary chondrite) |
|---|---|---|---|
| T(K) | 4200 ± 350 | 4800 ± 350 | 4200 ± 250 |
| NFe I (cm−2) | 7.6 × 1014 ± 5.5 × 1014 | 3.1 × 1015 ± 1.9 × 1015 | 1.1 × 1015 ± 1.7 × 1014 |
| Γ (s−1) | 1.0 × 1010 ± 1.0 × 109 | 1.4 × 1010 ± 8.0 × 109 | 5.0 × 109 ± 2.4 × 108 |
| P(m2) | 200 ± 170 | 3 ± 7 | 20 ± 15 |
| Si I/Fe I | 23.00 ± 4.50 | 80.00 ± 10.00 | 3.00 ± 0.75 |
| Mg I/Fe I | 0.80 ± 0.09 | 260.00 ± 20.00 | 1.83 ± 0.20 |
| Ca I/Fe I | 0.011 ± 0.002 | 0.033 ± 0.006 | 0.0002 ± 0.00003 |
| Al I/Fe I | 0.10 ± 0.04 | 0.04 ± 0.03 | 0.001 ± 0.0006 |
| Ti I/Fe I | 0.001 ± 0.0001 | 0.003 ± 0.001 | 0.0004 ± 0.00005 |
| Cr I/Fe I | 0.004 ± 0.0003 | 0.048 ± 0.007 | 0.002 ± 0.0004 |
| Mn I/Fe I | 0.02 ± 0.002 | 0.095 ± 0.033 | 0.006 ± 0.0007 |
| Na I/Fe I | 0.0002 ± 0.00001 | 0.032 ± 0.006 | 0.002 ± 0.001 |
| K I/Fe I | 1 × 10−6 ± 3 × 10−7 | 0.0002 ± 0.00005 | – |
| Li I/Fe I | 1 × 10−5 ± 2 × 10−6 | 6 × 10−5 ± 2 × 10−6 | – |
Notes. Results of spectral fitting for ACH1 (aubrite candidate), ACH2 (eucrite candidate), and a representative ordinary chondrite. Listed are the parameters of the main spectral component derived from the radiative transfer model: temperature (T), column density of FeI atoms (NFe I), damping constant (Γ), and radiating plasma cross section (P), together with abundances of selected species relative to Fe I (before ionization correction).
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