2004A&A...427..873W


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET09:47:58

2004A&A...427..873W - Astronomy and Astrophysics, volume 427, 873-886 (2004/12-1)

A reexamination of electron density diagnostics for ionized gaseous nebulae.

WANG W., LIU X.-W., ZHANG Y. and BARLOW M.J.

Abstract (from CDS):

We present a comparison of electron densities derived from optical forbidden line diagnostic ratios for a sample of over a hundred nebulae. We consider four density indicators, the [OII] λ3729/λ3726, [SII] λ6716/λ6731, [ClIII] λ5517/λ5537 and [ArIV] λ4711/λ4740 doublet ratios. Except for a few HII regions for which data from the literature were used, diagnostic line ratios were derived from our own high quality spectra. For the [OII] λ3729/λ3726 doublet ratio, we find that our default atomic data set, consisting of transition probabilities from Zeippen (1982MNRAS.198..111Z) and collision strengths from Pradhan (1976MNRAS.177...31P), fit the observations well, although at high electron densities, the [OII] doublet ratio yields densities systematically lower than those given by the [SII] λ6716/λ6731 doublet ratio, suggesting that the ratio of transition probabilities of the [OII] doublet, A(λ3729)/A(λ3726), given by Zeippen (1982MNRAS.198..111Z) may need to be revised upwards by approximately 6 per cent. Our analysis also shows that the more recent calculations of [OII] transition probabilities by Zeippen (1987A&A...173..410Z) and collision strengths by McLaughlin & Bell (1998, J. Phys. B, 31, 4317) are inconsistent with the observations at the high and low density limits, respectively, and can therefore be ruled out. We confirm the earlier result of Copetti & Writzl (2002A&A...382..282C) that the [OII] transition probabilities calculated by Wiese et al. (1996, Atomic transition probabilities of carbon, nitrogen, and oxygen: a critical data compilation, Washington, Am. Chem. Soc. for the N.I.S.T.) yield electron densities systematically lower than those deduced from the [SII] λ6716/λ6731 doublet ratio and that the discrepancy is most likely caused by errors in the transition probabilities calculated by Wiese et al. (1996). Using our default atomic data set for [OII], we find that Ne([OII])≲Ne([SII])≃Ne([ClIII])<Ne([ArIV]).

Abstract Copyright:

Journal keyword(s): atomic data - ISM: lines and bands - ISM: planetary nebulae: general

Simbad objects: 110

goto Full paper

goto View the reference in ADS

Number of rows : 110

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 40 PN 00 13 01.0170260109 +72 31 19.032886305   11.63 11.46     [WC8] 594 2
2 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 716 2
3 PN Vy 1-1 PN 00 18 42.1733129759 +53 52 19.778791084           [WC] 123 0
4 PN BoBn 1 PN 00 37 16.03 -13 42 58.6   16       ~ 126 1
5 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11202 1
6 [PAV78] 576 HII 00 42 58.416 +41 37 15.65           ~ 5 0
7 [PAV78] 622 HII 00 44 44.507 +41 25 30.85           ~ 5 0
8 [PAV78] 857 HII 00 45 26.220 +41 54 03.52           ~ 5 0
9 SNR B0057-72.2 SNR 00 59 27.40 -72 10 10.7   12.37 12.57     ~ 220 0
10 IC 418 PN 05 27 28.2060343141 -12 41 50.282659007   9.78 13.0     O7fp 1004 2
11 NGC 3242 PN 10 24 46.1335198512 -18 38 32.294434711   11.83 12.15     ~ 802 1
12 IC 3568 PN 12 33 06.871 +82 33 48.95   11.4 11.1     ~ 389 1
13 IC 4191 PN 13 08 47.34 -67 38 37.6   10.32 11.61     ~ 135 0
14 WRAY 16-125 PN 13 09 36.405 -61 19 35.57   13.37 12.70     B[e] 119 0
15 PN MyCn 18 PN 13 39 35.0560904148 -67 22 51.758576199   13.30 12.54 13.19 12.61 ~ 268 1
16 WRAY 16-135 PN 13 45 22.3674292595 -71 28 56.136996109   12.9 12.80     Of-WR(H) 71 0
17 NGC 5307 PN 13 51 03.322 -51 12 20.77   11.5 10     O3.5V 169 0
18 IC 4406 PN 14 22 26.1443764953 -44 09 02.205426646   11.5 10.90     ~ 269 0
19 WRAY 15-1269 PN 14 59 53.4814028450 -54 18 07.524725528 12.12 12.17 11.64 11.63   [WC11] 230 0
20 WRAY 16-165 PN 15 06 13.7149467774 -42 59 56.513764472   13.2 13.20     ~ 71 0
21 NGC 5873 PN 15 12 50.8601856470 -38 07 31.593041989   11.6 9.7     [WC] 136 0
22 NGC 5882 PN 15 16 49.9567882973 -45 38 58.610861335   11.9 10.9     ~ 267 0
23 PN Me 2-1 PN 15 22 19.2744138687 -23 37 31.499029460   12.2 12.20     ~ 212 0
24 NGC 5979 PN 15 47 41.16 -61 13 05.6     12.10     wels 96 0
25 WRAY 16-190 PN 15 52 10.6705171371 -62 30 47.205697345     13.30     ~ 51 0
26 WRAY 16-198 PN 15 59 57.63 -55 55 33.0   15.88 15.15     [WC9] 125 0
27 NGC 6058 PN 16 04 26.5482156541 +40 40 58.948952322     13.0     sd 191 0
28 IC 4593 PN 16 11 44.5480003321 +12 04 17.033164436   10.91 10.84     O7fp 441 0
29 NGC 6072 PN 16 12 58.3630225774 -36 13 47.401537466     12.10     ~ 163 0
30 PN Mz 3 PN 16 17 13.3911453557 -51 59 10.706640574   10.8 14.00     O9.5 335 0
31 PN Sn 1 PN 16 21 04.3991393878 -00 16 10.679547644           ~ 90 0
32 NGC 6153 PN 16 31 30.5709136856 -40 15 12.646146874   10.7 15.55     ~ 290 0
33 PN PC 12 PN 16 43 53.7838465697 -18 57 11.948594827           O 79 0
34 NGC 6210 PN 16 44 29.5195973291 +23 47 59.491267229   12.3 11.7     Of/[WR] 575 0
35 PN M 2-4 PN 17 01 06.2180715520 -34 49 38.677997265     14.40     ~ 73 0
36 WRAY 16-244 PN 17 01 17.2289710613 -70 06 03.264660109   13.20 11.99     ~ 56 0
37 IC 4634 PN 17 01 33.5805836298 -21 49 33.002375687   12.3 11.3     O3If 265 0
38 PN M 2-6 PN 17 04 18.33 -30 53 28.9     14.60     ~ 73 1
39 IC 4637 PN 17 05 10.47 -40 53 07.7     9.20     ~ 126 0
40 PN PC 14 PN 17 06 14.75 -52 30 00.5   17.2 16.5     [WC4/6] 104 0
41 CPD-56 8032 PN 17 09 00.86008 -56 54 48.0957 11.24 11.48 11.04     [WC10] 251 0
42 NGC 6302 PN 17 13 44.339 -37 06 10.95   7.1 10.10     ~ 761 1
43 PN M 3-7 PN 17 24 34.45 -29 24 19.7     14.60     [WC] 83 0
44 PN M 1-20 PN 17 28 57.612 -19 15 53.94           ~ 120 0
45 NGC 6439 PN 17 48 19.820 -16 28 44.42     12.2     ~ 172 0
46 PN H 1-35 PN 17 49 13.9251055629 -34 22 52.842287784     12.90     wels? 108 0
47 Hen 2-289 Sy* 17 49 48.22 -37 01 27.9   7.73       M8 159 1
48 PN M 1-29 PN 17 50 17.9658145641 -30 34 54.987881214     14.00     ~ 87 1
49 PN Cn 2-1 PN 17 54 33.010 -34 22 21.15     12.70 14.47 13.70 ~ 131 0
50 PN H 1-41 PN 17 57 19.1095310368 -34 09 48.780474395           [WC] 82 0
51 PN H 1-42 PN 17 57 25.1720091886 -33 35 43.132190632     12.80     ~ 73 0
52 NGC 6543 PN 17 58 33.4042519454 +66 37 58.748961810   11.09 11.28     [WC] 1128 1
53 PN M 2-23 PN 18 01 42.64 -28 25 44.2     13.00     ~ 114 0
54 PN M 2-24 PN 18 02 02.8949286491 -34 27 47.271639687   15.62 14.60 15.29   ~ 94 0
55 PN M 3-21 PN 18 02 32.33 -36 39 11.3     12.20     ~ 104 1
56 PN M 2-27 PN 18 03 52.60 -31 17 46.7     14.40     [WC4]: 99 0
57 PN H 1-50 PN 18 03 53.5070795395 -32 41 42.015753284   10 12.80     ~ 76 0
58 NGC 6537 PN 18 05 13.104 -19 50 34.88     13.58     ~ 413 1
59 PN H 1-54 PN 18 07 07.2726922774 -29 13 06.009856913     13.90     ~ 98 0
60 PN M 1-42 PN 18 11 04.99 -28 58 59.1   13.1 14.00     ~ 196 0
61 NGC 6565 PN 18 11 52.558 -28 10 42.35   12.5 12.2 12.12   PN 221 0
62 NGC 6572 PN 18 12 06.3140077888 +06 51 13.030152295   9.3 10.8     [WC] 740 0
63 PN M 2-31 PN 18 13 16.0573157107 -25 30 05.262267071   13.3 13.60     [WC4/6] 93 0
64 NGC 6567 PN 18 13 45.1634807418 -19 04 34.069059115     10.9     [WC5/6] 261 1
65 PN M 2-33 PN 18 15 06.5633998847 -30 15 33.260690288       14.61 14.03 O5f(H) 99 0
66 NGC 6578 PN 18 16 16.517 -20 27 02.67           [WC4/6] 196 0
67 PN Cn 3-1 PN 18 17 34.1015205519 +10 09 03.306489008   12.93 12.49 12.35   07Ib(f) 209 0
68 PN M 2-36 EB* 18 17 41.43 -29 08 19.9   12.8 13.40   17.012 ~ 127 0
69 IC 4699 PN 18 18 32.0453780375 -45 59 01.734612109   13.83 12.71 15.51 15.09 O3V((f)) 94 0
70 PN M 2-39 PN 18 22 01.15 -24 10 39.8     15.00     wels 72 0
71 PN M 2-42 PN 18 22 32.08 -24 09 27.7     13.90     ~ 70 0
72 NGC 6620 PN 18 22 54.182 -26 49 17.19   12.8 13.30 14.34 14.55 ~ 135 0
73 PN M 3-27 PN 18 27 48.2640348979 +14 29 06.065873844           ~ 72 0
74 PN Vy 2-1 PN 18 27 59.6272042071 -26 06 48.028181940   12.8 13.20     [WC] 82 0
75 PN Cn 1-5 PN 18 29 11.6504002939 -31 29 59.125146747   15.5 15.2 13.34   [WC5/6] 142 0
76 PN M 3-29 PN 18 39 25.8184118925 -30 40 37.224180155   13.0 14.10     ~ 75 0
77 PN M 3-32 PN 18 44 43.03 -25 21 34.8           ~ 64 0
78 IC 4776 PN 18 45 50.705 -33 20 34.12   11.98 10.62     [WC]pec 192 1
79 PN M 1-61 PN 18 45 55.12 -14 27 37.9           ~ 102 0
80 PN M 3-33 PN 18 48 12.1405449794 -25 28 52.422456442     13.20     ~ 74 0
81 PN Hu 2-1 PN 18 49 47.56755 +20 50 39.4576   12.369 11.126 12.30   ~ 266 0
82 PN M 1-64 PN 18 50 02.090 +35 14 36.10           ~ 50 0
83 M 57 PN 18 53 35.0969571234 +33 01 44.883146221   15.405 15.769 15.901 16.062 DA(O?) 796 2
84 NGC 6741 PN 19 02 37.10 -00 26 56.7     9.6     ~ 342 0
85 IC 4846 PN 19 16 28.2205101750 -09 02 36.760345214           ~ 206 0
86 IC 1297 PN 19 17 23.4475611063 -39 36 46.255054503     10.89     [WC3/4] 154 0
87 NGC 6778 PN 19 18 25.0 -01 35 47     14.8     ~ 243 0
88 NGC 6781 PN 19 18 28.085 +06 32 19.29     11.8     ~ 249 0
89 NGC 6790 PN 19 22 56.966 +01 30 46.46   12.52 10.45     wels 314 0
90 NGC 6803 PN 19 31 16.47 +10 03 21.7     15.2     ~ 244 0
91 Hen 2-434 PN 19 33 49.3680637745 -74 32 58.664357169   12.92 12.78     O 68 0
92 NGC 6807 PN 19 34 33.53 +05 41 02.5     12     ~ 135 0
93 PN Me 1-1 PN 19 39 09.8201107636 +15 56 48.274244829           ~ 120 0
94 NGC 6818 PN 19 43 58.022 -14 09 13.44     9.3     ~ 339 1
95 NGC 6826 PN 19 44 48.1500835472 +50 31 30.250916761   10.21 9.6     O6fp 701 0
96 NGC 6833 PN 19 49 46.5751757576 +48 57 40.076934646           ~ 166 0
97 M 27 PN 19 59 36.3632092274 +22 43 16.312364964   13.749 14.089 14.247 14.405 DAO.6 571 0
98 NGC 6884 PN 20 10 23.6401227444 +46 27 39.547818788   11.9 10.9     ~ 308 1
99 NGC 6879 PN 20 10 26.70 +16 55 21.4     14.8     O3f(He) 145 0
100 NGC 6886 PN 20 12 42.83 +19 59 22.6           ~ 315 0
101 IC 4997 PN 20 20 08.7615653034 +16 43 53.993812400   11.94 11.15     [WC7/8] 530 0
102 NGC 7008 PN 21 00 32.817600 +54 32 35.37600       13.21   ~ 232 2
103 NGC 7009 PN 21 04 10.8153350719 -11 21 48.581808296   12.48 12.07     ~ 969 1
104 PN G006.0-41.9 PN 21 05 53.5727941679 -37 08 40.381134656   16.52 16.32     ~ 37 0
105 NGC 7026 PN 21 06 18.5721833093 +47 51 06.780221314   15.33 15.1     [WC3] 406 1
106 PN Hu 1-2 PN 21 33 08.3071114501 +39 38 09.524664348     12.0     ~ 277 1
107 IC 5148 PN 21 59 35.0866715591 -39 23 08.237614320     16.5     O? 63 1
108 IC 5217 PN 22 23 55.7197244731 +50 58 00.461084740     15.5     [WC7] 300 0
109 PN Me 2-2 PN 22 31 43.683 +47 48 03.91   9.3       ~ 147 0
110 NGC 7662 PN 23 25 53.6 +42 32 06   9.4 12     ~ 913 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2004A&A...427..873W and select 'bookmark this link' or equivalent in the popup menu


2021.03.01-09:47:58

© Université de Strasbourg/CNRS

    • Contact