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Table 2
Photospheric element abundances of the dust forming elements in the astrophysical logarithmic scale for different groups of stars.
| F & G stars | B dwarfs | |||
|---|---|---|---|---|
| El. | Solar Z | Age <1 Ga | ||
| He | 10.99 ± 0.01 | |||
| C | 8.37 ± 0.11 | 8.39 ± 0.11 | 8.33 ± 0.04 | |
| O | 8.75 ± 0.07 | 8.77 ± 0.13 | 8.76 ± 0.05 | |
| Mg | 7.63 ± 0.32 | 7.64 ± 0.21 | 7.56 ± 0.05 | |
| Al | 6.52 ± 0.24 | 6.54 ± 0.22 | ||
| Si | 7.60 ± 0.28 | 7.61 ± 0.23 | 7.50 ± 0.05 | |
| Ca | 6.42 ± 0.37 | 6.48 ± 0.39 | ||
| Fe | 7.55 ± 0.12 | 7.61 ± 0.25 | 7.52 ± 0.03 | |
| Ni | 6.22 ± 0.09 | 6.25 ± 0.07 | ||
Notes. The data are from Lodders et al. (2009) for F and G stars, and from Nieva & Przybilla (2012) for B stars.
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