2004A&A...427..231G

Query : 2004A&A...427..231G

2004A&A...427..231G - Astronomy and Astrophysics, volume 427, 231-244 (2004/11-3)

The populations of planetary nebulae in the direction of the Galactic Bulge. Chemical abundances and Wolf-Rayet central stars.

GORNY S.K., STASINSKA G., ESCUDERO A.V. and COSTA R.D.D.

Abstract (from CDS):

We have observed 44 planetary nebulae (PNe) in the direction of the Galactic bulge, and merged our data with published ones. We have distinguished, in the merged sample of 164 PNe, those PNe most likely to prtain physically to the Galactic bulge and those most likely to belong to the Galactic disk. We have determined the chemical composition of all the 164 objects in a coherent way. We looked for stellar emission features and discovered 14 new [WR] stars and 15 new weak emission line central stars. The analyzed data led us to the following conclusions: (1) the spectral type distribution of [WR] stars is very different in the bulge and in the disk of the Galaxy. However, the observed distributions are strongly dependent on selection effects. (2) The proportion of [WR]PNe is significantly larger in the bulge than in the disk. (3) The oxygen abundances in [WR] stars do no appear to be significantly affected by nucleosynthesis and mixing in the progenitors. (4) The O/H gradient of the Galactic disk PNe population flattens in the most internal parts of the Galaxy. (5) The median oxygen abundance in the bulge PN population is larger by 0.2dex than in the disk population seen in the direction of the bulge. (6) Bulge PNe with smaller O/H tend to have smaller radial velocities. (7) The oxygen abundance distribution of bulge PNe is similar in shape to that of the metallicity distribution of bulge giants, but significantly narrower. (8) The location of SB 32 (PN G 349.7-09.1) in the (Vlsr, lII) diagram and its low oxygen abundance argues that it probably belongs to the halo population.

Abstract Copyright: ∼

Journal keyword(s): stars: Wolf-Rayet - ISM: planetary nebulae: general - Galaxy: bulge - Galaxy: abundances

VizieR on-line data: <Available at CDS (J/A+A/427/231): table1.dat table2.dat table3.dat>

Simbad objects: 74

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Number of rows : 74
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 SMP LMC 83 PN 05 36 20.7215081304 -67 18 07.658262756 15.56 16.225 14.948   16.558 [WN4.5:] 145 0
2 CD-32 9927 * 14 11 46.3227735768 -33 03 14.373268704   10.793 10.444 10.12 10.106 A4 98 0
3 NGC 6153 PN 16 31 30.5708444544 -40 15 12.646208700   10.7 15.55     ~ 303 0
4 PN K 2-16 PN 16 44 49.0522431864 -28 04 04.706514300   13.18 12.75     [WC11] 92 0
5 PN H 1-2 PN 16 48 54.1065182208 -35 47 08.952429948   11.5 13.60     [WC11] 65 0
6 PN M 1-19 PN 17 03 46.8491993472 -33 29 44.433527316   15.02 13.87 14.87 14.16 [WC] 70 0
7 PN M 2-8 PN 17 05 30.70 -32 32 08.1     14.50     [WC2/3] 62 0
8 NGC 6309 PN 17 14 04.3074600360 -12 54 37.893271860   11.6       O(He) 312 1
9 PN H 1-11 PN 17 21 17.7263264688 -22 18 35.517598344           ~ 71 0
10 PN M 2-12 PN 17 24 01.4751224640 -25 59 23.283283848   13.5 12.5     [WC11] 65 0
11 PN M 3-7 PN 17 24 34.4529856560 -29 24 19.796240052     14.60     [WC] 90 0
12 PN Th 3-13 PN 17 25 19.3690159560 -30 40 42.079625832           [WC5/6] 53 0
13 PN G343.9-05.8 PN 17 27 02.2665247236 -45 32 38.831962929           ~ 15 0
14 NGC 6369 PN 17 29 20.4566510904 -23 45 34.771819248   16.6 12.00     [WC4] 317 0
15 PN H 2-11 PN 17 29 25.9611478512 -25 49 07.205229768           ~ 63 0
16 PN K 5-1 PN 17 29 52.3627254360 -26 11 13.611944904           ~ 27 1
17 PN K 5-3 PN 17 30 41.198 -23 45 00.40           [WC4] 24 0
18 PN H 1-24 PN 17 33 37.5822007992 -21 46 24.764813832           ~ 72 0
19 PN H 1-26 PN 17 36 29.8983692976 -39 21 56.702843496     14.40     [WC4/5] 43 0
20 PN M 1-25 PN 17 38 30.3160501176 -22 08 38.934269052   17.9       [WC6] 145 0
21 PN Hb 4 PN 17 41 52.8002065320 -24 42 08.330663196   18.4 17     [WC4] 219 1
22 PN M 2-14 PN 17 41 57.2678295912 -24 11 16.203074712     14.70 15.71 14.50 ~ 65 0
23 PN H 1-29 WV* 17 44 13.8729577601 -34 17 32.824856894     14.90 16.04 14.90 [WC4/6] 70 0
24 PN M 3-15 PN 17 45 31.7096699160 -20 58 01.493896440           [WC4/6] 127 1
25 PN M 1-27 WR? 17 46 45.4755803568 -33 08 35.133711936     13.90     [WC11]? 100 0
26 PN M 3-44 PN 17 51 18.9230505792 -30 23 53.176813980     16.50     [WC11] 82 0
27 PN SB 34 PN 17 52 09.4188804912 -39 32 14.865843840           [WC2] 17 0
28 PN M 1-31 PN 17 52 41.4448424016 -22 21 57.159303984           [WC] 104 0
29 PN M 1-30 PN 17 52 58.95 -34 38 22.6   16.6 16.4     ~ 106 0
30 PN G351.7-06.6 PN 17 53 02.87 -39 24 08.9           ~ 15 0
31 PN H 1-39 PN 17 53 21.0206431968 -33 55 58.445317128     15.20     [WC11]? 63 0
32 IRAS 17514-1555 PN 17 54 21.13104 -15 55 52.0032           [WC11] 101 0
33 PN M 2-20 PN 17 54 25.32 -29 36 08.2     16.1     [WC5/6] 74 0
34 PN Cn 2-1 PN 17 54 33.010 -34 22 21.15     12.70 14.47 13.70 ~ 134 0
35 PN Bl 3-13 PN 17 56 02.7875230032 -29 11 16.552199904     16.00     ~ 62 0
36 PN M 1-32 PN 17 56 20.11 -16 29 04.6   18.3 17.0     [WC4/5] 103 1
37 PN M 3-17 PN 17 56 25.65 -31 04 17.2     16.50     [WC11]? 61 0
38 PN H 1-41 PN 17 57 19.1084978568 -34 09 48.784614372           [WC] 88 0
39 PN H 1-43 PN 17 58 14.4398681232 -33 47 37.621641912     15.10     [WC11] 79 0
40 PN G349.7-09.1 PN 17 59 26.9 -42 24 52           ~ 11 0
41 PN H 1-47 PN 18 00 37.6202014872 -29 21 50.638625244     15.60     [WC11]? 77 0
42 PN M 2-27 PN 18 03 52.5718384152 -31 17 47.161796424     14.40     [WC4]: 103 0
43 PN M 1-37 PN 18 05 25.8092901000 -28 22 04.282489956     14.70     [WC11]? 129 0
44 PN M 1-40 PN 18 08 25.989 -22 16 52.93   11       ~ 117 1
45 PN MaC 1-10 PN 18 09 12.4110798682 -25 04 34.426975990           [WC8] 49 0
46 PN H 1-60 PN 18 12 25.22 -27 29 12.8           [WC] 70 0
47 PN H 1-61 PN 18 12 33.99 -24 50 00.5     16.90     ~ 46 0
48 PN M 2-31 PN 18 13 16.0521431976 -25 30 05.320920636   13.3 13.60     [WC4/6] 100 0
49 NGC 6567 PN 18 13 45.1636643352 -19 04 34.071637152     10.9     [WC5/6] 270 1
50 PN M 2-33 PN 18 15 06.5634327720 -30 15 33.265211580       14.61 14.03 O5f(H) 105 0
51 PN SwSt 1 PN 18 16 12.2834104368 -30 52 07.906578996   12.1 11.10     [WC9/10] 294 0
52 NGC 6578 PN 18 16 16.517 -20 27 02.67           [WC4/6] 203 0
53 PN M 2-34 PN 18 17 15.90 -23 58 53.7     15.00     [WC] 53 0
54 PN H 1-65 PN 18 20 08.8466492016 -24 15 05.268485484   12 14.30     [WC11] 84 0
55 PN M 2-39 PN 18 22 01.1620945464 -24 10 39.916889760     15.00     wels 76 0
56 PN H 1-67 PN 18 25 04.976 -22 34 52.64           [WC2/3] 62 0
57 NGC 6629 PN 18 25 42.4541775576 -23 12 10.551587436   11.90 9.9     [WC5/6] 265 0
58 PN M 1-46 PN 18 27 56.3175434256 -15 32 54.434037264     12.83     O(H)7I(fc) 125 0
59 PN Vy 2-1 PN 18 27 59.6260402536 -26 06 48.065269284   12.8 13.20     [WC] 87 0
60 PN Cn 1-5 PN 18 29 11.6500996872 -31 29 59.135208396   15.5 15.2 13.34   [WC5/6] 150 0
61 NGC 6644 PN 18 32 34.70280 -25 07 44.1588           ~ 193 0
62 PN V-V 3 PN 18 37 11.11 -19 02 21.9           ~ 44 0
63 PN SB 19 PN 18 39 40.2 -19 14 08           ~ 20 0
64 PN M 3-30 PN 18 41 14.938 -15 33 43.58     17.9     [WC2/3] 88 0
65 PN M 1-60 PN 18 43 38.0929948608 -13 44 49.280634744           [WC4] 84 0
66 IC 4776 PN 18 45 50.705 -33 20 34.12   11.98 10.62     [WC]pec 194 1
67 PN M 1-61 PN 18 45 55.12 -14 27 37.9           ~ 108 0
68 PN M 3-33 PN 18 48 12.1403633760 -25 28 52.423742352     13.20     ~ 80 0
69 PN M 1-62 PN 18 50 26.0470300152 -22 34 22.707895260           [WC] 50 0
70 PN Y-C 2-32 PN 18 55 30.6705727224 -21 49 39.811373832           ~ 35 0
71 PN Hb 7 PN 18 55 37.8037363176 -32 15 48.553611372   12.58 11.65 13.61   O3 93 0
72 IC 1297 PN 19 17 23.4475188000 -39 36 46.253665872     10.89     [WC3/4] 161 0
73 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 636 1
74 NAME Galactic Bulge reg ~ ~           ~ 4297 0

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