Table 5
Coronal and photospheric abundancesa.
| Photospheric abundancesb | Coronal abundancesc | |||||||||||||
| Object | C | O | Mg | Si | Fe | Ni | C | N | O | Mg | Si | Fe | Ni | Ne |
|
|
||||||||||||||
| 11 LMi | ··· | 2.0 | 0.7−2.4 | 2.6−3.1 | 1.0−1.5 | 2.5−2.8 | 0.6−1.9 | 0.2−1.2 | 0.6−1.0 | 0.7−1.5 | 0.4−0.9 | 0.8−1.5 | 0.0−1.9 | 0.6−1.0 |
| ι Hor | 1.1−2.2 | 2.4 | 1.4−1.6 | 1.2−1.6 | 1.0−2.3 | 1.1−1.5 | ··· | ··· | 0.3−0.4 | 1.7−2.1 | 1.2−1.7 | 1.2−1.4 | ··· | 0.9−1.3 |
| HR 7291 | 1.3−2.4 | 1.0−2.2 | 0.9−1.8 | 1.3−1.6 | 2.5 | ··· | ··· | ··· | 0.2−0.3 | 0.8−1.0 | 0.2−0.4 | 0.7−0.8 | ··· | 0.3−0.5 |
| τ Boo | 2.9−3.7 | 3.5−2.1 | ··· | 2.1−2.4 | 1.6−2.0 | 1.7−1.9 | 0.3−0.8 | 0.2−0.7 | 0.2−0.7 | 0.4−0.6 | 0.7−0.9 | 0.4−0.7 | 0.9−3.3 | 0.3−0.5 |
| α Cen A | 2.6 | 4.1 | 1.7−2.4 | 2.0−3.2 | 1.8−2.8 | 2.2−2.7 | 0.9−1.3 | 0.4−0.9 | 0.4−0.6 | 1.4−1.9 | 1.2−1.7 | 1.4−1.6 | 2.2−3.1 | 0.6−1.2 |
| α Cen B | 2.0 | 3.1 | 1.9−2.3 | 2.0−2.3 | 1.9−2.0 | 1.4−1.7 | 1.1−1.6 | 0.6−1.1 | 0.5−0.8 | 1.1−1.8 | 1.6−2.3 | 1.3−1.6 | 2.0−2.8 | 0.5−1.2 |
Notes.
Relative to solar abundance (Asplund et al. 2009).
Ranges represent literature disparity: Soubiran & Girard (2005); Prugniel (2011); Ramirez (2007); Luck & Heiter (2006); Milone (2011); Gonzalez & Laws (2007). Biazzo et al. (2012); Bond et al. (2006); Takeda et al. (2001); Allende Prieto et al. (2004); and Porto de Mello et al. (2008).
Ranges represent ± 1σ intervals from best fit for ι Hor, 11 LMi, and HR 7291. τ Boo and α Cen are taken from Maggio et al. (2011) and Raassen et al. (2003).
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