Ref. | Spectral |
![]() |
![]() |
He | C | N | O | Ne | C/O | N/O | Ne/O |
domain |
![]() |
![]() |
|||||||||
T01 | O | 150 | - |
![]() |
|||||||
J02 | O | 100 | 17.6 | 10.82 | 6.93 | 7.47 | 3.47 | ||||
R02 | O | 100 | 30 | 10.9
![]() |
6.15 (0.35) | 6.35 | 0.5
![]() |
||||
PT05 | O | 130 | 30 | 10.91 |
![]() |
6.65 | 0.14 (0.14) | ||||
S05 | O+U | - | - | 7.51 (0.15) | 6.87 (0.19) | 6.85 (0.25) | 6.6
![]() |
4.7
![]() |
1.05 (0.15) | 0.65 (0.35) | |
J06 | O+U | 130 | 30a | 10.87 | 7.58 | 6.94 | 7.18 | 6.66 | 2.5
![]() |
0.58 | 0.30 |
this work | O+U | 138 | 21.1 | 10.88 | 7.90 | 7.47: | 6.74 | 6.96 | 14
![]() |
5.4:
![]() |
1.7
![]() |
![]() |
11.04 | 8.89 | 8.39 | 8.65 | 8.01 | 1.74 | 0.55 | 0.23 | |||
BoBn-1 | 11.05 | 8.85 | 8.00 | 7.83 | 7.72 | 10.5 | 1.48 | 0.78 |
Notes. The
table only includes
estimates that are based on observed emission lines.
Columns 1-4 specify the source reference, the wavelength range
(O - optical, and U - UV), the stellar effective
temperature (
)
and the mean electron temperature (
)
used in the study. Columns 5-9 give element abundances using
the same units as in Table 2. In
Cols. 10-12 we also give abundance ratios relative to oxygen.
Uncertainties are, were provided, given in parentheses.
A colon indicates an uncertain value of our best-match model.
The abundances of our best-match model are given in the row marked this
work. In the last two rows we, for comparison, give the mean
abundance distribution of the Galactic disk (
;
Table 2)
and the halo-PN BoBn-1 (the values of this object are taken from Howard et al. 1997).
For further details see Sect. 5.
(a) Jacoby
(priv. comm.).
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