Table 17
Elemental abundance of PNe with far-infrared data in addition to optical and UV data.
| PNe | He/H | C/H | N/H | O/H | Ne/H | S/H | Ar/H | Cl/H | R♮ | Ref. |
| × 10-4 | × 10-4 | × 10-4 | × 10-4 | × 10-6 | × 10-6 | × 10-8 | (kpc) | |||
|
|
||||||||||
| NGC 1535 | 0.091 | 1.6 | 0.32 | 2.7 | 0.54 | !.3 | 1.1 | 6.0 | 9.9 | a |
| Tc 1 | ≥0.060 | 3.6 | 0.36 | 2.6 | 0.63 | 2.8 | 5.1 | 9.4 | 6.3 | a |
| He2-108 | 0.11 | ≤1.9 | 0.60 | 2.8 | 2.9 | 8.1 | 5.1 | 4.1 | a | |
| NGC 6629 | 0.096 | 2.1 | 0.45 | 4.8 | 0.84 | 2.2 | 2.0 | 12: | 6.0 | a |
| NGC 6826 | 0.10 | 4.8 | 0.58 | 3.95 | 1.5 | 2.6 | 1.4 | 8.5 | 8.0 | b |
| IC 418 | ≥0.072 | 6.2 | 0.95 | 3.5 | 0.88 | 4.4 | 1.8 | 12 | 8.8 | c |
| IC2˙448 | 0.094 | 2.7 | 0.55 | 2.5 | 0.64 | 2.0 | 1.2 | 8.0 | d | |
| NGC 2392 | 0.080 | 3.3 | 1.85 | 2.9 | 0.85 | 5.0 | 2.2 | 13 | 8.4 | e |
| NGC 3242 | 0.092 | 1.95 | 1.0 | 3.8 | 0.90 | 2.8 | 1.7 | 7.0 | 8.1 | f |
|
|
||||||||||
| Solar | (0.085) | 2.7 | 0.675 | 4.9 | (0.84) | 13. | (2.5) | 31. | 8.0 | g |
|
|
||||||||||
| NGC 6302 | 0.17 | 0.6 | 2.9 | 2.3 | 2.2 | 7.8 | 6.0 | 34. | 6.4 | h |
| NGC 6537 | 0.149 | 1.7 | 4.5 | 1.8 | 1.7 | 11. | 4.1 | 24. | 6.0 | j |
References. a) Present paper; b) Surendiranath & Pottasch (2008, A&A, 483, 519); c) Pottasch et al. (2004, A&A, 423, 593); d) Guiles, S., et al. (2007, ApJ 669, 1282); e) Pottasch et al. (2008, A&A, 481, 393); f) Pottasch & Bernard-Salas (2008, A&A, 490, 715); g) Grevesse et al. (2010, Ap&SS, 328, 179); h) Pottasch et al. (1999, A&A, 347, 975); j) Pottasch et al. (2000, A&A, 363, 767).
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