2002A&A...384..620A

Query : 2002A&A...384..620A

2002A&A...384..620A - Astronomy and Astrophysics, volume 384620-628 (2002/3-3)

Turbulent planetary nebulae around [WC]-type stars.

ACKER A., GESICKI K., GROSDIDIER Y. and DURAND S.

Abstract (from CDS):

Through a high-resolution spectroscopic survey, we analyze the velocity field of 16 planetary nebulae with [WC]- or wels-type nuclei in comparison with 8 nebulae having other central star types. We found spectral evidence for finite turbulent velocities in [WC]-type planetary nebulae superimposed on an essentially constant expansion velocity pattern. The nebulae around O-type stars show no evidences for significant turbulence while their expansion velocity is found to increase outwards. Both types of nebulae show the same mean expansion velocity. Our results support the earlier suggestions that nebulae surrounding [WC] central stars are likely related to long-lasting momentum-driven phase bubbles. Turbulence in the nebulae can be either triggered, or enhanced, by stellar wind inhomogeneities that appear ubiquitous in Wolf-Rayet nuclei.

Abstract Copyright: ∼

Journal keyword(s): planetary nebulae: general - stars: Wolf-Rayet - turbulence

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 40 PN 00 13 01.0170097248 +72 31 19.033338720   11.63 11.46     [WC8] 632 2
2 NGC 1501 PN 04 06 59.3920909320 +60 55 14.278542024   15.17 13.0     [WO4] 314 1
3 PN M 4-18 PN 04 25 50.8356162744 +60 07 12.780446700   14.22 13.96     [WC11] 192 0
4 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1059 2
5 IC 2165 PN 06 21 42.7847803566 -12 59 14.040997076   12.146 10.782 12.305   ~ 385 0
6 NGC 3242 PN 10 24 46.1335521792 -18 38 32.296857792   11.83 12.15     ~ 838 1
7 PN Pe 1-1 PN 10 38 27.5856481368 -56 47 07.226821644   15.855 14.178 15.394   [WC4/5] 108 1
8 IC 3568 PN 12 33 06.8549162136 +82 33 50.202643608   11.809 10.730 12.651   ~ 407 0
9 WRAY 16-198 PN 15 59 57.6368189878 -55 55 33.002692934           [WC9] 142 1
10 PN K 2-16 PN 16 44 49.0522431864 -28 04 04.706514300   13.18 12.75     [WC11] 98 0
11 CPD-56 8032 PN 17 09 00.9278385254 -56 54 47.863882536 11.24 11.48 11.04 11.067   [WC11] 277 0
12 NGC 6369 PN 17 29 20.4566510904 -23 45 34.771819248   16.6 12.00     [WC4] 335 0
13 PN M 3-12 PN 17 36 22.634 -21 31 12.22           ~ 60 0
14 PN M 1-25 PN 17 38 30.3160501176 -22 08 38.934269052   17.9       [WC6] 156 0
15 PN Hb 4 PN 17 41 52.8002065320 -24 42 08.330663196   18.4 17     [WC4] 232 1
16 PN M 3-15 PN 17 45 31.7096699160 -20 58 01.493896440           [WC4/6] 137 1
17 PN Tc 1 PN 17 45 35.2879212240 -46 05 23.717122728   11.30 11.49     PCyg 280 0
18 PN M 1-30 PN 17 52 58.95 -34 38 22.6   16.6 16.4     ~ 117 0
19 NGC 6543 PN 17 58 33.4039587288 +66 37 58.750734000   11.09 11.28     [WC] 1197 2
20 PN M 1-40 PN 18 08 25.989 -22 16 52.93   11       ~ 122 1
21 PN SwSt 1 PN 18 16 12.2834104368 -30 52 07.906578996   12.1 11.10     [WC9/10] 301 0
22 NGC 6620 PN 18 22 54.182 -26 49 17.19   12.8 13.30 14.34 14.55 ~ 145 0
23 PN M 2-43 PN 18 26 40.0500205632 -02 42 57.364170912     15.7     [WC7/8] 127 0
24 NGC 6751 PN 19 05 55.5383775432 -05 59 32.288861544   15.78 15.48     [WC4] 338 0
25 IC 1297 PN 19 17 23.4475188000 -39 36 46.253665872     10.89     [WC3/4] 170 0
26 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 976 0
27 Hen 3-1863 PN 20 19 28.6995237984 -41 31 27.491019204   10.51 10.65     ~ 43 0

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