Table 3.
Optical region line intensities in NGC 6537
| λobserved | λlab | Element | Mult. | kλ | I(Ham) | F(Ham) | rms |
|---|---|---|---|---|---|---|---|
| 3868.77 | 3868.71 | [Ne iii] | (1F) | 0.228 | 107.2 | 41.69 | 20% |
| 3889.05 | H i | H8 | |||||
| 3888.83 | 3888.65 | He i | (2) | 0.223 | 16.07 | 6.38 | 67% |
| 3967.48 | 3967.41 | [Ne iii] | (1F) | 0.203 | 33.97 | 14.62 | 4.8% |
| 3970.11 | 3970.07 | H i | Hɛ | 0.203 | 7.908 | 3.41 | 31% |
| 4068.61 | 4068.60 | [S ii] | (1F) | 0.180 | 8.153 | 3.87 | |
| 4076.32 | 4076.35 | [S ii] | (1F) | 0.178 | 1.996 | 0.95 | |
| 4097.42 | 4097.31 | N iii | (1) | 0.173 | 4.639 | 2.26 | |
| 4101.71 | 4101.76 | H i | Hδ | 0.172 | 14.12 | 6.92 | 66% |
| 4103.40 | 4103.37 | N iii | (1) | 0.172 | 2.188 | 1.07 | |
| 4338.64 | 4338.67 | He ii | (4-10) | 0.129 | 2.809 | 1.64 | 19% |
| 4340.44 | 4340.47 | H i | Hγ | 0.129 | 41.68 | 24.43 | 17% |
| 4363.19 | 4363.21 | [O iii] | (2F) | 0.124 | 24.51 | 14.69 | 21% |
| 4471.45 | 4471.48 | He i | (14) | 0.095 | 4.110 | 2.77 | 13% |
| 4541.53 | 4541.59 | He ii | (9) | 0.077 | 2.916 | 2.12 | 18% |
| 4606.30 | 4606.60 | Fe iii | (3F) | 0.061 | 1.276 | 0.99 | |
| 4634.11 | 4634.16 | N iii | (2) | 0.054 | 2.415 | 1.93 | 20% |
| 4638.28 | line? | 0.053 | 0.625 | 0.50 | |||
| 4640.61 | 4640.64 | N iii | (2) | 0.053 | 5.458 | 4.39 | 8.1% |
| 4642.06 | 4641.81 | N iii | (2) | 0.052 | 0.603 | 0.49 | |
| 4685.70 | 4685.68 | He ii | (3-4) | 0.042 | 112.1 | 94.19 | 22% |
| 4711.31 | 4711.34 | [Ar iv] | (1F) | 0.036 | 11.67 | 10.05 | 5.7% |
| 4713.15 | 4713.14 | He i | (12) | 0.036 | 0.936 | 0.81 | 23% |
| 4714.20 | 4714.25 | [Ne iv] | (1F) | 0.035 | 1.918 | 1.66 | 8.9% |
| 4724.05 | 4724.15 | [Ne iv] | (1F) | 0.033 | 2.659 | 2.32 | 28% |
| 4725.52 | 4725.62 | [Ne iv] | (1F) | 0.033 | 2.178 | 1.90 | 32% |
| 4740.20 | 4740.20 | [Ar iv] | (1F) | 0.029 | 21.73 | 19.23 | 8.2% |
| 4859.31 | 4859.32 | He ii | (4-8) | 0 | 3.722 | 3.72 | 20% |
| 4861.32 | 4861.33 | H i | Hβ | 0 | 100.0 | 100.0 | 9.9% |
| 4921.92 | 4921.93 | He i | (48) | −0.015 | 1.014 | 1.08 | 22% |
| 4958.91 | 4958.92 | [O iii] | (1F) | −0.023 | 306.4 | 337.3 | 4.8% |
| 5006.84 | 5006.84 | [O iii] | (1F) | −0.034 | 974.1 | 1122 | 5.8% |
| 5015.68 | 5015.68 | He i | (4) | −0.036 | 1.575 | 1.83 | 27% |
| 5017.46 | 5017.48 | † | −0.036 | 0.490 | 0.57 | ||
| 5041.00 | 5041.06 | Si ii | (5) | −0.041 | 1.029 | 1.22 | |
| 5056.35 | Si ii | (5) | |||||
| 5056.02 | 5056.02 | Si ii | (5) | −0.045 | 0.754 | 0.91 | |
| 5191.74 | 5191.80 | [Ar iii] | (3F) | −0.073 | 0.394 | 0.53 | 13% |
| 5197.98 | 5197.90 | [N i] | (1F) | −0.074 | 1.255 | 1.71 | |
| 5200.34 | 5200.26 | [N i] | (1F) | −0.074 | 0.591 | 0.81 | |
| 5309.26 | 5309.20 | [Ca v] | − | −0.097 | 0.266 | 0.40 | |
| 5412.00 | [Fe iii] | (1F) | |||||
| 5411.53 | 5411.52 | He ii | (2)4-7 | −0.118 | 8.461 | 13.80 | 6.3% |
| 5461.13 | line? | −0.128 | 1.102 | 1.87 | 53% | ||
| 5517.51 | 5517.71 | [Cl iii] | (1F) | −0.139 | 0.385 | 0.69 | 23% |
| 5537.82 | 5537.88 | [Cl iii] | (1F) | −0.143 | 0.916 | 1.66 | 8.5% |
| 5679.56 | 5679.56 | N ii | (3) | −0.175 | 0.250 | 0.52 | |
| 5721.27 | 5721.10 | [Fe vi] | −0.184 | 0.441 | 0.94 | ||
| 5754.67 | 5754.64 | [N ii] | (3F) | −0.191 | 21.41 | 47.21 | 3.8% |
| 5837.02 | 5837.06 | He ii | Pf32 | −0.208 | 0.204 | 0.48 | |
| 5846.89 | 5846.65 | He ii | Pf31 | −0.210 | 0.140 | 0.33 | |
| 5875.66 | 5875.67 | He i | (11) | −0.216 | 13.01 | 31.84 | 8.2% |
| 5953.03 | 5952.93 | He ii | Pf24 | −0.229 | 0.158 | 0.41 | |
| 5977.00 | 5977.02 | He ii | Pf23 | −0.233 | 0.225 | 0.59 | 5.9% |
| 6004.63 | 6004.72 | He ii | Pf22 | −0.238 | 0.184 | 0.49 | 1.8% |
| 6036.98 | 6036.78 | He ii | Pf21 | −0.243 | 0.296 | 0.81 | 29% |
| 6074.21 | 6074.19 | He ii | Pf20(8) | −0.249 | 0.277 | 0.78 | 12% |
| 6086.75 | 6086.90 | [Cav, Fevii] | −0.252 | 0.353 | 1.00 | 25% | |
| 6101.71 | 6101.80 | [K iv] | (1F) | −0.254 | 0.875 | 2.51 | 9.7% |
| 6118.24 | 6118.26 | He ii | Pf19 | −0.257 | 0.216 | 0.63 | 10% |
| 6170.69 | 6170.69 | He ii | Pf18 | −0.265 | 0.257 | 0.77 | 16% |
| 6228.27 | 6228.40 | [K vi] | −0.274 | 0.261 | 0.81 | 20% | |
| 6233.88 | 6233.82 | He ii | Pf17(7) | −0.275 | 0.347 | 1.08 | 9.4% |
| 6300.29 | 6300.30 | [O i] | (1F) | −0.285 | 0.829 | 2.70 | |
| 6312.09 | 6312.10 | [S iii] | (3F) | −0.287 | 8.359 | 27.42 | 6.9% |
| 6347.11 | 6347.09 | Si ii | (2) | −0.292 | 0.133 | 0.44 | 24% |
| 6363.71 | 6363.78 | [O i] | (1F) | −0.294 | 0.319 | 1.08 | |
| 6371.08 | 6371.36 | Si ii | (2) | −0.295 | 0.438 | 1.49 | |
| 6406.38 | 6406.38 | He ii | Pf15(7) | −0.301 | 0.518 | 1.80 | 11% |
| 6435.00 | 6435.11 | [Ar v] | (1F) | −0.305 | 8.661 | 30.62 | 9.6% |
| 6478.36 | N iii | CPM | −0.311 | 0.186 | 0.68 | ||
| 6500.28 | Ar ii | CPM | −0.314 | 0.181 | 0.67 | ||
| 6513.19 | line? | −0.316 | 0.116 | 0.43 | |||
| 6516.29 | [Mn v] | CPM | −0.316 | 0.100 | 0.37 | ||
| 6527.23 | [N ii] | ||||||
| 6527.03 | 6527.10 | He ii | −0.318 | 0.708 | 2.64 | 14% | |
| 6545.10 | line? | −0.320 | 0.165 | 0.62 | |||
| 6548.11 | 6548.03 | [N ii] | (1F) | −0.321 | 111.35 | 420.7 | 6.1% |
| 6560.07 | 6560.10 | He ii | (4-6) | −0.322 | 15.195 | 57.81 | 13% |
| 6562.75 | 6562.82 | H i | Hα | −0.323 | 316.9 | 1208 | 4.8% |
| 6568.65 | line? | −0.324 | 0.076 | 0.29 | |||
| 6580.92 | 6581.00 | line? | −0.325 | 0.363 | 1.40 | 19% | |
| 6583.47 | 6583.45 | [N ii] | (1F) | −0.326 | 350.6 | 1352.07 | 8.6% |
| 6600.57 | 6601.10 | [Fe vii] | (1F) | −0.328 | 0.216 | 0.84 | |
| 6678.16 | 6678.15 | He i | (46) | −0.338 | 3.181 | 12.93 | 10% |
| 6683.19 | 6683.15 | He ii | Pf13(7) | −0.339 | 0.804 | 3.28 | 14% |
| 6716.40 | 6716.47 | [S ii] | (2F) | −0.343 | 4.070 | 16.87 | 6.1% |
| 6730.78 | 6730.85 | [S ii] | (2F) | −0.345 | 8.660 | 36.14 | 12% |
| 6738.28 | 6739.4 | [Sr ii]? | −0.346 | 0.149 | 0.62 | ||
| 6794.99 | 6795.00 | [K iv] | (1F) | −0.352 | 0.238 | 1.02 | |
| 6890.91 | 6890.88 | He ii | Pf12(7) | −0.363 | 0.974 | 4.40 | 1.1% |
| 7005.74 | 7005.70 | [Ar v] | (1F) | −0.376 | 18.64 | 88.72 | 9.5% |
| 7057.15 | line? | −0.382 | 0.099 | 0.48 | |||
| 7065.20 | 7065.28 | He i | (10) | −0.383 | 6.587 | 32.21 | 9.6% |
| 7135.78 | 7135.78 | [Ar iii] | (1F) | −0.391 | 29.99 | 151.4 | 7.3% |
| 7170.70 | 7170.62 | [Ar iv] | (2F) | −0.394 | 1.335 | 6.84 | 9.9% |
| 7177.84 | 7177.50 | He ii | Pf11(6) | −0.395 | 0.513 | 2.64 | 44% |
| 7237.63 | 7237.54 | [Ar iv] | (2F) | −0.401 | 1.415 | 7.46 | 2.1% |
| 7262.90 | 7262.96 | [Ar iv] | (2F) | −0.404 | 1.122 | 5.98 | 21% |
| 7281.35 | 7281.35 | He i | (45) | −0.406 | 0.729 | 3.92 | 5.4% |
| 7320.00 | 7319.80 | [O ii] | (2F) | −0.410 | 8.213 | 44.87 | 0.6% |
| 7330.20 | 7330.70 | [O ii] | (2F) | −0.411 | 6.913 | 37.93 | 5.4% |
| 7458.38 | line? | −0.423 | 0.079 | 0.46 | |||
| 7499.89 | 7499.84 | He i | (1/8) | −0.428 | 0.052 | 0.31 | |
| 7530.38 | 7530.83 | [Cl iv] | (1F) | −0.430 | 1.184 | 7.05 | 0.5% |
| 7582.12 | line? | −0.435 | 0.200 | 1.21 | |||
| 7592.69 | 7592.74 | He ii | Pf10(6) | −0.436 | 1.890 | 11.53 | 12.1% |
| 7618.50 | 7618.5 | N v | (14) | −0.439 | 0.409 | 2.52 | 4.0% |
| 7703.32 | 7703.3 | N iv | (23) | −0.447 | 0.269 | 1.71 | 58% |
| 7712.71 | 7713.3 | O iv? | (21) | −0.448 | 0.164 | 1.05 | 11% |
| 7726.14 | 7726.20 | C iv | (8.01) | −0.449 | 0.099 | 0.64 | 22% |
| 7751.11 | 7751.43 | [Ar iii] | (1F) | −0.451 | 8.633 | 55.98 | 17% |
| 7816.37 | 7816.16 | He i | (69) | −0.457 | 0.119 | 0.79 | |
| 8045.66 | 8046.27 | [Cl iv]? | (1F) | −0.477 | 2.564 | 18.49 | 9.3% |
| 8192.23 | line? | −0.489 | 0.138 | 1.04 | |||
| 8196.51 | 8196.48 | C iii | (43) | −0.489 | 0.165 | 1.26 | 17% |
| 8236.77 | 8236.78 | He ii | Pf9 | −0.492 | 2.759 | 21.23 | 1.3% |
| 8281.15 | 8281.12 | H i* | P31 | −0.496 | 0.112 | 0.87 | |
| 8286.32 | 8286.43 | H i | P30 | −0.496 | 0.134 | 1.04 | 12% |
| 8292.05 | 8292.31 | H i | P29 | −0.497 | 0.122 | 0.95 | 43% |
| 8298.79 | 8298.84 | H i | P28 | −0.497 | 0.111 | 0.87 | 34% |
| 8306.67 | 8306.12 | H i* | P27 | −0.498 | 0.177 | 1.39 | |
| 8314.17 | 8314.26 | H i | P26 | −0.498 | 0.155 | 1.22 | |
| 8315.36 | 8315.10 | C iii | 5g–6h | −0.499 | 0.170 | 1.35 | |
| 8323.59 | 8323.43 | H i | P25 | −0.499 | 0.180 | 1.43 | 31% |
| 8333.86 | 8333.78 | H i | P24 | −0.500 | 0.191 | 1.52 | |
| 8333.93 | 8333.78 | H i | P24 | −0.500 | 0.202 | 1.60 | |
| 8345.56 | 8345.55 | H i | P23 | −0.502 | 0.205 | 1.64 | 6.1% |
| 8359.02 | 8359.01 | H i | P22 | −0.504 | 0.170 | 1.37 | 12% |
| 8374.53 | 8374.48 | H i | P21 | −0.506 | 0.163 | 1.33 | 15% |
| 8379.66 | 8379.60 | He ii | (6-41) | −0.507 | 0.040 | 0.32 | |
| 8386.56 | † | −0.508 | 0.063 | 0.52 | |||
| 8392.33 | 8392.40 | H i | P20 | −0.509 | 0.213 | 1.76 | 37% |
| 8413.29 | 8413.32 | H i | P19 | −0.512 | 0.226 | 1.89 | 17% |
| 8434.36 | 8433.85 | [Cl iii] | (3F) | −0.516 | 0.191 | 1.62 | |
| 8437.94 | 8437.96 | H i | P18 | −0.516 | 0.272 | 2.31 | 31% |
| 8446.65 | 8446.48 | O i | (4) | −0.517 | 0.052 | 0.45 | |
| 8467.27 | 8467.26 | H i | P17 | −0.521 | 0.354 | 3.06 | 18% |
| 8481.16 | [Cl iii] | (3F) | |||||
| 8480.70 | 8480.73 | He i | −0.523 | 0.120 | 1.05 | ||
| 8502.45 | 8502.49 | H i | P16 | −0.526 | 0.331 | 2.92 | 32% |
| 8545.37 | 8545.38 | H i | P15 | −0.532 | 0.436 | 3.96 | 9.3% |
| 8567.03 | 8566.90 | He ii | (6-29) | −0.536 | 0.067 | 0.62 | |
| 8578.90 | 8578.70 | [Cl ii] | (1F) | −0.537 | 0.296 | 2.75 | 1.4% |
| 8598.34 | 8598.39 | H i | P14 | −0.540 | 0.590 | 5.53 | 17% |
| 8662.00 | He i | (10/14) | |||||
| 8661.54 | 8661.40 | He ii | (6-26) | −0.549 | 0.135 | 1.31 | |
| 8665.00 | 8665.02 | H i | P13 | −0.550 | 0.883 | 8.63 | 19% |
| 8750.50 | 8750.48 | H i | P12 | −0.562 | 0.942 | 9.68 | 1.0% |
| 8799.00 | 8798.90 | He ii | (6-23) | −0.569 | 0.078 | 0.83 | |
| 8850.17 | 8849.0 | He i? | (3/9) | −0.576 | 0.135 | 1.47 | |
| 8862.55 | 8862.79 | H i | P11 | −0.578 | 1.953 | 21.43 | 51% |
| 9010.95 | 9011.20 | He ii | (6-20) | −0.598 | 0.154 | 1.84 | |
| 9014.86 | 9014.91 | H i | P10 | −0.599 | 1.797 | 21.48 | 23% |
| 9068.66 | 9068.90 | [S iii] | (1F) | −0.606 | 21.16 | 260.6 | 19% |
| 9076.85 | † | −0.607 | 0.221 | 2.74 | |||
| 9210.44 | 9210.28 | He i | (83), 6/9 | −0.612 | 0.086 | 1.08 | |
| 9223.90 | 9223.0 | N v? | −0.612 | 0.631 | 7.98 | ||
| 9228.94 | 9229.02 | H i | P9 | −0.612 | 2.108 | 26.67 | 13% |
| 9367.63 | 9367.1 | He ii | (6-17) | −0.616 | 0.143 | 1.83 | |
| 9463.44 | 9463.57 | He i | (1/5) | −0.618 | 0.240 | 3.10 | |
| 9526.29 | 9526.00 | He i | (6/8) | −0.620 | 0.162 | 2.12 | |
| 9530.93 | 9531.00 | [S iii] | (1F) | −0.620 | 98.28 | 1282 | 6.5% |
| 9542.39 | 9542.00 | He ii | (6-16) | −0.620 | 0.234 | 3.05 | 44% |
| 9545.98 | 9545.97 | H i* | P8 | −0.620 | 0.893 | 11.67 | 25% |
| 9547.79 | line? | −0.620 | 3.294 | 43.05 | |||
| 9624.13 | 9625.64 | He i?? | (10/8) | −0.622 | 0.121 | 1.59 | |
| 9705.22 | 9705.9 | C iii | −0.624 | 0.120 | 1.59 | ||
| 9807.72 | line? | −0.626 | 0.163 | 2.18 | |||
| 9912.87 | line? | −0.629 | 0.306 | 4.14 | |||
| 10045.57 | 10045.20 | He ii | (6-14) | −0.631 | 0.292 | 4.00 | 25% |
| 10049.32 | 10049.38 | H i | P7 | −0.632 | 3.796 | 52.00 | 16% |
| 10123.89 | 10123.61 | He ii | (4-5) | −0.633 | 6.318 | 87.00 | 83% |
| 10286.78 | 10296.5 | [S ii]?? | (3F) | −0.636 | 1.951 | 27.29 |
Extinction corrected with C = 1.80 (see text). For the identification, see Hyung and Aller (25) and references therein cited. See Péquignot and Baluteau (26) for [Kr iv] 5867.8?.
*
, Lines affected by atmosphere.
? , Unlikely or doubtful identification.
†
, These unidentified lines are seen in other PN, i.e., IC 4997, NGC 7027, and NGC 7662.
CPM , Identification by Cuesta, Phillips, and Mampaso (7), but other lines, such as 6396 [Mn v], 6463/67 N iii, and 6853 [Mn vi], are not seen!