2015ApJS..218...25S

Query : 2015ApJS..218...25S

2015ApJS..218...25S - Astrophys. J., Suppl. Ser., 218, 25 (2015/June-0)

The abundances of light neutron-capture elements in planetary nebulae. III. The impact of new atomic data on nebular selenium and krypton abundance determinations.

STERLING N.C., PORTER R.L. and DINERSTEIN H.L.

Abstract (from CDS):

The detection of neutron(n)-capture elements in several planetary nebulae (PNe) has provided a new means of investigating s-process nucleosynthesis in low-mass stars. However, a lack of atomic data has inhibited accurate trans-iron element abundance determinations in astrophysical nebulae. Recently, photoionization (PI) and recombination data were determined for Se and Kr, the two most widely detected n-capture elements in nebular spectra. We have incorporated these new data into the photoionization code Cloudy. To test the atomic data, numerical models were computed for 15 PNe that exhibit emission lines from multiple Kr ions. We found systematic discrepancies between the predicted and observed emission lines that are most likely caused by inaccurate PI and recombination data. These discrepancies were removed by adjusting the Kr+-Kr3+ PI cross sections within their cited uncertainties and the dielectronic recombination rate coefficients by slightly larger amounts. From grids of models spanning the physical conditions encountered in PNe, we derive new, broadly applicable ionization correction factor (ICF) formulae for calculating Se and Kr elemental abundances. The ICFs were applied to our previous survey of near-infrared [Kr iii] and [Se iv] emission lines in 120 PNe. The revised Se and Kr abundances are 0.1-0.3 dex lower than former estimates, with average values of [Se/(O, Ar)] = 0.12±0.27 and [Kr/(O, Ar)] = 0.82±0.29, but correlations previously found between their abundances and other nebular and stellar properties are unaffected. We also find a tendency for high-velocity PNe that can be associated with the Galactic thick disk to exhibit larger s-process enrichments than low-velocity PNe belonging to the thin-disk population.

Abstract Copyright: ∼

Journal keyword(s): atomic data - infrared: general - nuclear reactions, nucleosynthesis, abundances - planetary nebulae: general - stars: AGB and post-AGB

VizieR on-line data: <Available at CDS (J/ApJS/218/25): table1.dat input.dat table4.dat table7.dat table14.dat refs.dat>

Simbad objects: 123

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Number of rows : 123
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 40 PN 00 13 01.0170097248 +72 31 19.033338720   11.63 11.46     [WC8] 617 2
2 PN Vy 1-1 PN 00 18 42.1732297536 +53 52 19.778622996           [WC] 129 0
3 PN Hu 1-1 PN 00 28 15.435 +55 57 54.48           ~ 161 1
4 PN M 1-1 PN 01 37 19.3623937872 +50 28 11.344069236   13.07 13.91     ~ 142 0
5 IC 1747 PN 01 57 35.6899203048 +63 19 18.447328776   15.8 15.4     [WC4] 262 2
6 PN M 1-4 PN 03 41 43.4191369752 +52 17 00.267451836   15.86 14.27 15.26   ~ 120 1
7 IC 351 PN 03 47 32.9806443144 +35 02 48.639127308   13.11 12.27 14.35   Of(H) 257 0
8 IC 2003 PN 03 56 21.9884187048 +33 52 30.759977028   13.11 11.87 13.44   [WC3?] 252 0
9 NGC 1501 PN 04 06 59.3920909320 +60 55 14.278542024   15.17 13.0     [WO4] 296 1
10 PN M 2-2 PN 04 13 15.0286446504 +56 56 58.407808596           ~ 90 0
11 PN M 4-18 PN 04 25 50.8356162744 +60 07 12.780446700   14.22 13.96     [WC11] 181 0
12 PN K 3-67 PN 04 39 47.92824 +36 45 42.6276   15.085 13.680 14.965   ~ 73 0
13 Jonckheere 320 PN 05 05 34.2777790632 +10 42 22.924778148           O3V(f) 283 0
14 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1031 2
15 PN M 1-5 PN 05 46 50.0119955400 +24 22 02.848049436           ~ 116 1
16 IC 2149 PN 05 56 23.9011721904 +46 06 17.204826816   11.21 11.35     O7.5 429 0
17 IC 2165 PN 06 21 42.7847803566 -12 59 14.040997076   12.146 10.782 12.305   ~ 375 0
18 PN VV 28 PN 06 25 57.2710426104 +17 47 27.136548168     12.5     [WC] 290 0
19 PN M 1-6 PN 06 35 45.1241072736 -00 05 37.396958568     15.84     O6-9I 116 1
20 PN K 4-48 PN 06 39 55.842 +11 06 30.34     13.2     ~ 41 0
21 PN M 1-9 PN 07 05 19.2001625040 +02 46 59.452173768           ~ 88 0
22 PN M 1-11 PN 07 11 16.6948815960 -19 51 02.898476424     13.5     WC10-11 146 0
23 PN M 1-12 PN 07 19 21.4685188440 -21 43 55.402228344     14.08     WC10-11 117 0
24 PN M 1-14 PN 07 27 56.5101847704 -20 13 22.650485448           O(H)7-9 103 0
25 NGC 2392 PN 07 29 10.7671398096 +20 54 42.474888072     9.68     O6f 723 1
26 PN M 1-16 PN 07 37 18.902 -09 38 47.96   12.7       ~ 182 0
27 PN M 1-17 PN 07 40 22.1724359520 -11 32 29.783641164           ~ 100 0
28 NGC 2440 PN 07 41 55.4 -18 12 32   11.469 10.104     ~ 652 2
29 IC 2501 PN 09 38 47.1901701864 -60 05 30.807638520   11.7 10     O3-6 181 0
30 NGC 3242 PN 10 24 46.1335521792 -18 38 32.296857792   11.83 12.15     ~ 819 1
31 IC 3568 PN 12 33 06.8549162136 +82 33 50.202643608   11.809 10.730 12.651   ~ 399 0
32 IC 4191 PN 13 08 47.3071977936 -67 38 37.542860628   10.32 11.61     ~ 138 0
33 NGC 5315 PN 13 53 56.9726795664 -66 30 50.859483264   14.58 14.40     [WO4] 309 0
34 PN Me 2-1 PN 15 22 19.2811793544 -23 37 31.412401104   12.2 12.20     ~ 216 0
35 IC 4593 PN 16 11 44.5479462840 +12 04 17.031388584   10.91 10.84     O7fp 453 0
36 PN DdDm 1 PN 16 40 18.1517248296 +38 42 20.033859348   14.0 13.90     sd+G/K 146 0
37 NGC 6210 PN 16 44 29.5191019368 +23 47 59.421958296   12.3 11.7     Of/[WR] 587 0
38 IC 4634 PN 17 01 33.5816774904 -21 49 33.015515916   12.3 11.3     O3If 278 0
39 NGC 6302 PN 17 13 44.5 -37 06 11           O-rich 795 1
40 PN M 3-41 PN 17 25 59.82 -29 21 50.4     15.40     ~ 67 0
41 PN M 1-20 PN 17 28 57.6165015264 -19 15 54.033719256           ~ 128 0
42 NGC 6369 PN 17 29 20.4566510904 -23 45 34.771819248   16.6 12.00     [WC4] 317 0
43 PN M 1-25 PN 17 38 30.3160501176 -22 08 38.934269052   17.9       [WC6] 145 0
44 PN Hb 4 PN 17 41 52.8002065320 -24 42 08.330663196   18.4 17     [WC4] 219 1
45 PN M 3-15 PN 17 45 31.7096699160 -20 58 01.493896440           [WC4/6] 127 1
46 PN Hb 5 PN 17 47 56.20 -29 59 39.6   10.50 10.78     ~ 266 0
47 NGC 6439 PN 17 48 19.820 -16 28 44.42     12.2     ~ 174 0
48 NGC 6445 PN 17 49 15.0282384611 -20 00 34.159640072   18.9       ~ 293 0
49 PN M 1-31 PN 17 52 41.4448424016 -22 21 57.159303984           [WC] 104 0
50 PN Vy 1-2 PN 17 54 22.98 +27 59 58.1           ~ 111 0
51 IC 4670 PN 17 55 07.031 -21 44 40.04   15.03 13.28 13.88 13.56 ~ 146 2
52 PN M 1-32 PN 17 56 20.11 -16 29 04.6   18.3 17.0     [WC4/5] 103 1
53 NGC 6543 PN 17 58 33.4039587288 +66 37 58.750734000   11.09 11.28     [WC] 1170 1
54 PN M 1-35 PN 18 03 39.30 -26 43 33.9     14.50     ~ 93 0
55 NGC 6537 PN 18 05 13.104 -19 50 34.88     13.58     ~ 426 1
56 PN M 1-40 PN 18 08 25.989 -22 16 52.93   11       ~ 117 1
57 NGC 6572 PN 18 12 06.3181909152 +06 51 13.027935240   9.3 10.8     [WC] 753 0
58 PN M 2-31 PN 18 13 16.0521431976 -25 30 05.320920636   13.3 13.60     [WC4/6] 100 0
59 NGC 6567 PN 18 13 45.1636643352 -19 04 34.071637152     10.9     [WC5/6] 270 1
60 PN M 3-25 PN 18 15 16.967 -10 10 09.47           ~ 52 0
61 PN SwSt 1 PN 18 16 12.2834104368 -30 52 07.906578996   12.1 11.10     [WC9/10] 294 0
62 NGC 6578 PN 18 16 16.517 -20 27 02.67           [WC4/6] 203 0
63 PN Cn 3-1 PN 18 17 34.1015035728 +10 09 03.304908396   12.93 12.49 12.35   07Ib(f) 219 0
64 NGC 6629 PN 18 25 42.4541775576 -23 12 10.551587436   11.90 9.9     [WC5/6] 265 0
65 PN M 2-43 PN 18 26 40.0500205632 -02 42 57.364170912     15.7     [WC7/8] 120 0
66 PN M 1-46 PN 18 27 56.3175434256 -15 32 54.434037264     12.83     O(H)7I(fc) 125 0
67 NGC 6644 PN 18 32 34.70280 -25 07 44.1588           ~ 193 0
68 PN M 3-28 PN 18 32 41.288 -10 05 50.03   15.6       ~ 92 0
69 PN M 1-50 PN 18 33 20.88 -18 16 37.1           ~ 85 0
70 PN M 1-51 PN 18 33 29.05 -11 07 26.5           [WC4/6] 91 1
71 IC 4732 PN 18 33 54.6340681272 -22 38 41.382665232   12.5       ~ 147 0
72 PN M 1-54 PN 18 36 08.357 -16 59 57.02           ~ 82 0
73 PN M 1-57 PN 18 40 20.2561639992 -10 39 47.216941560           ~ 93 0
74 PN VV 201 PN 18 42 57.0075531633 -11 06 53.298252392           ~ 62 0
75 PN M 1-60 PN 18 43 38.0929948608 -13 44 49.280634744           [WC4] 84 0
76 PN M 1-61 PN 18 45 55.12 -14 27 37.9           ~ 108 0
77 PN Hu 2-1 PN 18 49 47.5610183328 +20 50 39.396894756   12.369 11.126 12.30   ~ 278 0
78 M 57 PN 18 53 35.0967659112 +33 01 44.883287544   15.405 15.769 15.901 16.062 DA(O?) 831 2
79 PN Hb 7 PN 18 55 37.8037363176 -32 15 48.553611372   12.58 11.65 13.61   O3 93 0
80 PN K 3-17 PN 18 56 18.164 +07 07 25.88           ~ 67 1
81 NGC 6741 PN 19 02 37.10 -00 26 56.7     9.6     ~ 346 0
82 NGC 6751 PN 19 05 55.5383775432 -05 59 32.288861544   15.78 15.48     [WC4] 328 0
83 IC 4846 PN 19 16 28.2266496960 -09 02 36.677150592           ~ 214 0
84 NGC 6778 PN 19 18 25.0 -01 35 47     14.8     ~ 256 0
85 NGC 6790 PN 19 22 56.972976 +01 30 46.40112   12.247 10.504 12.684   wels 322 0
86 PN Vy 2-2 PN 19 24 22.2390166933 +09 53 56.259102426   14.02 12.65 13.38   O-rich 261 0
87 NGC 6803 PN 19 31 16.4826019750 +10 03 21.620200381   13.034 11.616 13.242   ~ 248 0
88 NGC 6804 PN 19 31 35.1453655872 +09 13 31.298620188   13.4 13.4     ~ 215 1
89 NGC 6807 PN 19 34 33.53 +05 41 02.5     12     ~ 140 0
90 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 952 0
91 PN M 1-71 PN 19 36 26.9207484077 +19 42 24.018831075           [WC] 87 1
92 PN Me 1-1 PN 19 39 09.8202196560 +15 56 48.274743516   13.343 11.855 12.493   ~ 126 0
93 PN M 1-72 PN 19 41 33.9729642288 +17 45 17.525500164           ~ 56 0
94 PN M 1-74 PN 19 42 18.78 +15 09 08.3   12.8       ~ 123 0
95 NGC 6818 PN 19 43 58.022 -14 09 13.44     9.3     ~ 346 1
96 NGC 6826 PN 19 44 48.1500225888 +50 31 30.249034932   9.779 9.359 10.775   O3f(H) 719 0
97 NGC 6833 PN 19 49 46.5667474512 +48 57 40.113276876           ~ 173 0
98 PN M 2-48 PN 19 50 28.52520 +25 54 29.5452           ~ 79 0
99 PN M 1-75 PN 20 04 44.1 +31 27 28           ~ 97 1
100 PN K 3-55 PN 20 06 56.2756808832 +32 16 37.344147528           ~ 40 1
101 NGC 6884 PN 20 10 23.6424784416 +46 27 39.631794408   11.9 10.9     ~ 314 1
102 NGC 6879 PN 20 10 26.6930056361 +16 55 21.272110541   13.661 12.540 14.075   O3f(He) 150 0
103 NGC 6881 PN 20 10 52.45 +37 24 42.4           ~ 207 0
104 NGC 6886 PN 20 12 42.83016 +19 59 22.6320   13.053 11.719     ~ 320 1
105 Hen 2-459 PN 20 13 57.8909464128 +29 33 55.874044764   14.10 12.67     [WC9] 102 0
106 NGC 6891 PN 20 15 08.8435405584 +12 42 15.584146740   12.11 12.51     O3Ib(f*) 395 0
107 IC 4997 PN 20 20 08.7557973960 +16 43 53.698933380   11.94 11.15     [WC7/8] 544 0
108 PN M 3-35 PN 20 21 03.7631843136 +32 29 24.005231700   15.56 15.30     ~ 95 0
109 NGC 6905 PN 20 22 22.9919225472 +20 06 16.285052088   16.3 14.5     [WC3] 346 0
110 NGC 7009 PN 21 04 10.8155187648 -11 21 48.580157556   12.48 12.07     ~ 996 1
111 NGC 7026 PN 21 06 18.5723414928 +47 51 06.774735780   15.33 15.1     [WC3] 418 1
112 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2459 1
113 PN K 3-60 PN 21 27 26.47944 +57 39 06.1704           ~ 50 0
114 PN K 3-61 PN 21 30 00.7565699064 +54 27 27.195110712   15.9 14.8     [WC4/6] 75 0
115 PN K 3-62 PN 21 31 50.1857850312 +52 33 51.571785996           ~ 82 1
116 IC 5117 PN 21 32 30.96912 +44 35 47.5404           ~ 301 1
117 PN Hu 1-2 PN 21 33 08.3106242400 +39 38 09.554428752     12.0     ~ 286 1
118 IC 5217 PN 22 23 55.7180137224 +50 58 00.464340252     15.5     [WC7] 306 0
119 PN Me 2-2 PN 22 31 43.6753782000 +47 48 03.836846628   9.3       ~ 154 0
120 NGC 7354 PN 22 40 19.8733664208 +61 17 08.746685772           ~ 277 1
121 PN M 1-80 PN 22 56 19.89864 +57 09 20.8656           ~ 97 2
122 NGC 7662 PN 23 25 53.8318792825 +42 32 05.835828380       11.427   ~ 926 0
123 PN Hb 12 PN 23 26 14.8236376464 +58 10 54.543292356   13.51 11.49 12.44   Oe 329 0

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