Table 4
Integrated Te, ne, ionic and elemental abundances from this study in comparison with previous ones.
| Our study | MH16 (†††) | MG13 | PB08 | KC06 | TS03 | |
|---|---|---|---|---|---|---|
| Te (K)/ne (cm−3) | ||||||
| Te ([S III]) | 12 700 ± 800 | − | − | − | − | |
| Te ([O III]) | − | 11 700 ± 300 | 12 900 ± 720 | 10 800 | 12 140 ± 31 | 11 700 |
| Te ([N II]) | 11 500 ± 600 | − | 11 670 ± 1000 | 11 000 | − | 13 400 |
| ne ([Cl III]) | 1600 ± 900 | − | 2380 ± 1300 | 3000 | 2531 ± 1227 | 1200 |
| ne ([S II]) | 2300 ± 700 | − | 3120 ± 1400 | 1900 | 1016 ± 436 | 1970 |
| ne (C II]) | − | 4500 ± 300 | − | − | − | − |
| Ionic and elemental abundances | ||||||
| He+/H+ (×10−2) | 7.35 ± 0.42 | 6.25 ± 0.45 | 8.0 | 7.07 | 7.12 ± 0.13 | 7.89 |
| He2+/H+(×10−2) | 2.24 ± 0.11 | 4.40 ± 0.07 | 0.945 | 2.12 | 3.47 ± 0.01 | 2.08 |
| He/H(×10−2) | 9.60 ± 0.47 | 10 ± 5 | 9 | 9.2 | 10.0 ± 1.3 | 10 |
| O°/H+(×10−7) | 1.22 ± 0.30 | − | 0.211 | − | − | − |
| O+/H+(×10−6) | (6.7 ± 1.6)(†) | (2.23 ± 0.90)(††) | -− | (5.1) (††) | (1.4 ± 0.1)(††) | 3.33 |
| O2+/H+(×10−4) | 2.11 ± 0.41 | 2.59 ± 0.21 | 2.34 | 3.78 | 2.36 ± 0.06 | 2.8 |
| O3+/H+(×10−5) | − | − | − | 4.3 | − | 35.1 |
| O/H(×10−4) | (2.53 ± 0.48)(†) | 4.44 ± 0.36 | 2.55 | 3.80 | 3.09 ± 0.09 | 3.3 |
| ICF(O) | 1.2 ± 0.3 | 1.70 ± 0.05 | 1.07 | 1 | 1.30 ± 0.01 | 1.17 |
| S+/H+(×10−8) | 1.55 ± 0.25 | − | 0.602 | 1.80 | 0.93 ± 0.02 | 0.337 |
| S2+/H+(×10−7) | 6.00 ± 0.95 | − | 7.43 | 8.3 | 6.1 ± 0.2 | 6.62 |
| S3+/H+(×10−6) | − | − | − | 1.94 | − | − |
| S/H(×10−6) | (1.40 ± 0.25)(†) | − | 2.24 | 2.80 | 2.60 ± 0.11 | 2.4 |
| ICF(S) | (2.3 ± 0.2)(†) | − | 3.00 | 1 | 4.20 ± 0.11 | 3.52 |
| N°/H+(×10−8) | 2.32 ± 0.95 | − | − | − | − | − |
| N+/H+(×10−7) | (3.00 ± 0.60)(†) | − | 2.63 | 4.1 | 1.9 ± 0.1 | 3.2 |
| N2+/H+(×10−5) | − | − | − | 5.7 | − | 2.2 |
| N3+/H+(×10−6) | − | − | − | 43.9 | − | 6.77 |
| N4+/H+(×10−5) | − | − | − | 3.6 | − | 2.35 |
| N/H(×10−5) | (1.50 ± 0.41)(†) | − | 2.05 | 13.5 | 4.19 ± 0.39 | 3.4 |
| ICF(N) | 49 ± 14 | − | 80 | 1 | 220 ± 17.0 | 1.53 |
Notes. The pseudo-slit employed for our estimations is centered at the center of the PN with dimensions 36.8″ × 42.6″. For the ionic abundances from previous studies, in the case where many emission lines were employed, and the adopted value was not available, the mean value of the individual ionic abundances was accounted in the table. (†)The resulted values after the correction for recombination contribution. (††)Only [O II] λλ3726,3729 (blended) were available for the estimation of O+/H+. (†††)In the case of MH16, the values in the table are those that came from the pseudo-slit that covers the full region. Miller et al. (2016):MH16, Monteiro et al. (2013):MG13, Pottasch & Bernard-Salas (2008):PB08, Krabbe & Copetti (2006):KC06, Tsamis et al. (2003):TS03.
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