Table 2
Interstellar dust extinction models.
| # | Name | Chemical formula | Form |
|---|---|---|---|
| 1 | Forsterite | Mg2SiO4 | Crystalline |
| 2 | Fayalite | Fe2SiO4 | Crystalline |
| 3 | Olivine | MgFeSiO4 | Amorphous |
| 4 | Olivine | Mg1.56Fe0.4Si0.91O4 | Crystalline |
| 5 | Enstatite | MgSiO3 | Amorphous |
| 6 | Enstatite | MgSiO3 | Crystalline |
| 7 | En60Fs40 | Mg0.6Fe0.4SiO3 | Amorphous |
| 8 | En60Fs40 | Mg0.6Fe0.4SiO3 | Crystalline |
| 9 | En75Fs25 | Mg0.75Fe0.25SiO3 | Amorphous |
| 10 | En90Fs10 | Mg0.9Fe0.1SiO3 | Amorphous |
| 11 | En90Fs10 | Mg0.9Fe0.1SiO3 | Crystalline |
| 12 | Quartz | SiO2 | Crystalline |
| 13 | Quartz | SiO2 | Amorphous |
| 14 | Quartz | SiO2 | Amorphous |
Notes. The nomenclature En(x)Fs(1-x) indicates the fraction of magnesium (or iron) included in the compound. “En” stands for enstatite (the Mg-pure pyroxene, Mg Si O3) and “Fs” for ferrosilite (the Fe-purepyroxene, FeSiO3). The two amorphous quartz present two different levels of glassiness: compound number 13 has an intermediate amorphous form whereas compound 14 has a full amorphous structure.
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