Table 2
Coronal and photospheric abundances of ι Hor (solar units).
| FIP | Solar photosphere | ι Hor [X/H] | ||||
|---|---|---|---|---|---|---|
| X | (eV) | Ref.(a) | (AG89) | RGS(b) | EPIC | Photosphere |
| Al | 5.98 | 6.45 | 6.47 | 0.29 ± 0.19 | … | 0.17 ± 0.04 |
| Ni | 7.63 | 6.22 | (6.25) | 0.15 ± 0.22 | … | 0.14 ± 0.05 |
| Mg | 7.64 | 7.60 | (7.58) | −0.09 ± 0.28 | 0.13 ± 0.03 | 0.17 ± 0.05 |
| Si | 8.15 | 7.51 | (7.56) | 0.41 ± 0.18 | −0.02 ± 0.04 | 0.16 ± 0.05 |
| Fe | 7.87 | 7.50 | (7.67) | 0.14 | 0.14 ± 0.02 | 0.19 ± 0.06 |
| S | 10.36 | 7.12 | (7.21) | −0.09 ± 0.35 | … | … |
| C | 11.26 | 8.43 | (8.56) | −0.04 ± 0.13 | … | 0.21 ± 0.08 |
| O | 13.61 | 8.69 | (8.93) | 0.26 ± 0.10 | −0.01 ± 0.03 | 0.16 ± 0.08 |
| N | 14.53 | 7.83 | (8.05) | 0.24 ± 0.13 | … | … |
| Ar | 15.76 | 6.40 | (6.56) | 0.78 ± 0.39 | … | … |
| Ne | 21.56 | 7.93 | (8.09) | 0.13 ± 0.15 | 0.00 ± 0.06 | … |
Notes. (a) Solar photospheric abundances from Asplund et al. (2009), adopted in this table, are expressed in logarithmic scale. Several values have been updated in the literature since Anders & Grevesse (1989, AG89), also listed for easier comparison. (b) Abundances measured using lines in RGS, except for Si and Al that use only HST/STIS (colder) lines.
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