Table 5
Chemical abundances of the components of HD 149 404.
| Primary | Secondary | Sun | |
|
|
|||
| He/H | 0.1 | 0.1 | 0.089 |
| C/H |
|
|
2.69 × 10-4 |
| N/H |
|
|
6.76 × 10-5 |
| O/H |
|
|
4.90 × 10-4 |
Notes.Abundances are given by number as obtained with CMFGEN. The solar abundances (Asplund et al. 2009) are quoted in the last column. The 1σ uncertainty on the abundances was set to abundances corresponding to a χ2 of 2.0. As only one line was considered for the C abundance of the secondary, the corresponding calculated uncertainty was unrealistically low. A similar problem was encountered for the O abundance of the primary star, for which we only had two lines to work with and several absent lines over the spectrum, as specified in the second paragraph of this section. To circumvent these problems, we set the uncertainties for these two abundances to values close to those calculated for the other two elements of the corresponding star.
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