Table 4
Elemental abundances set in Cloudy.
| Gas-phase composition | Abundance (uncertainty) in log |
|
|
|
| O/H | –3.79 (0.14) |
| N/H | –4.64 (0.12) |
| Ne/H | –4.44 (0.07) |
| S/H | –5.57 (0.10) |
| Ar/H | –6.20 (0.13) |
| C/H | –3.92 (0.3) |
| Si/H | –5.80 (0.3) |
| Fe/H | –5.92 (0.3) |
|
|
|
| Grain composition | Mass fraction |
|
|
|
| Carbonaceous | 36% |
| Silicate | 60% |
| PAH | 4% |
|
|
|
| Dust-to-gas mass ratio | 2.64×10-3 |
Notes. Abundances of oxygen, nitrogen, neon, sulphur, and argon are from Guseva et al. (2012), silicon from Izotov & Thuan (1999), and the others are average abundances of the Orion Nebula determined by Baldwin et al. (1991), Rubin et al. (1991), Osterbrock et al. (1992), Rubin et al. (1993), scaled to the metallicity of Haro 11. The main elemental composition O:C:Si:Fe in the grains is 4:9:1:1.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.