2000A&A...362.1008G

Query : 2000A&A...362.1008G

2000A&A...362.1008G - Astronomy and Astrophysics, volume 362, 1008-1019 (2000/10-3)

Evolutionary status of hydrogen-deficient central stars of planetary nebulae.

GORNY S.K. and TYLENDA R.

Abstract (from CDS):

The observational data for the planetary nebulae with hydrogen-deficient central stars are analysed. We show that the general evolutionary sequence is: late-[WC], early-[WC], PG1159. An analysis of the observed distributions of nebular parameters leads to a conclusion that the planetary nebulae with hydrogen-deficient nuclei are not different from the population of other planetary nebulae in the Galaxy. In particular the proportion of the H-deficient stars among young nebulae is the same as in the whole population. We have made a detailed comparison of the observed parameters with theoretical modelling of the late He-shell flash (born again AGB) scenario. Our finding is that the [WC] nuclei are not formed in a late He-shell flash. This scenario can, however, give origin to some PG1159 objects. There are five objects known which have presumably suffered from a late He-shell flash. The observed parameters of their nebulae imply that these stars will not become typical [WC] objects. Thus most of hydrogen-deficient central stars (at least [WC]) evolve directly from the AGB as do the other planetary nebula nuclei. We discuss implications of this result.

Abstract Copyright: ∼

Journal keyword(s): ISM: planetary nebulae: general - stars: AGB and post-AGB - stars: Wolf-Rayet

Simbad objects: 70

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Number of rows : 70
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 NGC 246 PN 00 47 03.3420341616 -11 52 18.971126076 10.15 11.52 11.76 12.18   PG1159 475 0
3 M 76 PN 01 42 19.6557728208 +51 34 31.534970052     17.48   17.69 DOZ 374 2
4 IC 1747 PN 01 57 35.6899203048 +63 19 18.447328776   15.8 15.4     [WC4] 262 2
5 PN IsWe 1 PN 03 49 05.9053580088 +50 00 14.898517992 15.71 16.374 16.523 16.576 16.644 DOZ 63 1
6 IC 2003 PN 03 56 21.9884187048 +33 52 30.759977028   13.11 11.87 13.44   [WC3?] 252 0
7 NGC 1501 PN 04 06 59.3920909320 +60 55 14.278542024   15.17 13.0     [WO4] 296 1
8 PN M 4-18 PN 04 25 50.8356162744 +60 07 12.780446700   14.22 13.96     [WC11] 181 0
9 PN K 1-27 PN 05 57 02.1748457640 -75 40 22.478040120     16.04 16.27 16.41 sdOHe 87 0
10 PN Vo 1 PN 06 59 26.4167860656 -79 38 47.118534828           [WC10] 100 0
11 WRAY 17-1 PN 07 14 49.4240697984 -46 57 39.199063500   13.8 13.00     PG1159 83 0
12 NGC 2371 PN 07 25 34.6883929008 +29 29 26.430252072   14.48 13.5     Oe 367 0
13 PN A66 21 PN 07 29 02.7096654192 +13 14 48.587555184   15.67 15.99     DOZ 191 0
14 NGC 2452 PN 07 47 26.2649505144 -27 20 06.819982188   17.9 12.20     [WO1] 256 0
15 PN ARO 121 PN 07 57 51.6169237320 +53 25 16.950484848   16.775 17.128 17.288 17.501 DQ 162 1
16 PN A66 30 PN 08 46 53.4639874872 +17 52 46.369394580   14.23 14.30 13.47   [WC5] 412 0
17 NGC 2867 PN 09 21 25.3832468160 -58 18 40.626683604   12.0 10.30     [WO2] 301 0
18 PN Lo 4 PN 10 05 45.7880109408 -44 21 33.523482384           sdO 139 1
19 PN PB 6 PN 10 13 15.9622567176 -50 19 59.563979688   17.4 17.6     [WO1] 137 0
20 PN Pe 1-1 PN 10 38 27.5856481368 -56 47 07.226821644   15.855 14.178 15.394   [WC4/5] 99 0
21 WRAY 16-79 PN 10 48 43.2301961352 -56 03 09.640445832   17.6 17.4     [WO3] 76 0
22 PN LoTr 4 PN 11 52 29.2564204824 -42 17 38.943700548           O(He) 56 0
23 V* GW Vir WD* 12 01 45.9731868264 -03 45 40.628670300   14.87 15.04     DOQZ1 490 0
24 NGC 5189 PN 13 33 32.8780414224 -65 58 27.041428272   14.1 14.5   14.35 [WO1] 316 2
25 WRAY 16-139 PN 13 52 30.6807509784 -66 23 26.577448872 12.57 13.26 13.18 13.52   [WC9] 159 0
26 NGC 5315 PN 13 53 56.9726795664 -66 30 50.859483264   14.58 14.40     [WO4] 309 0
27 WRAY 15-1269 PN 14 59 53.4819371136 -54 18 07.521138792 12.12 12.17 11.64 11.63   [WC11] 248 0
28 IRAS 15154-5258 PN 15 19 08.7609953630 -53 09 49.732929931   17.018 14.844 14.895   [WO4]pec 65 0
29 WRAY 16-198 PN 15 59 57.6368189878 -55 55 33.002692934           [WC9] 134 1
30 PN Pe 1-7 PN 16 30 25.8656749320 -46 02 50.864386056   17.9 16.7     [WC9] 91 0
31 PN K 2-16 PN 16 44 49.0522431864 -28 04 04.706514300   13.18 12.75     [WC11] 92 0
32 PN PC 14 PN 17 06 14.75 -52 30 00.5   17.2 16.5     [WC4/6] 109 0
33 CPD-56 8032 PN 17 09 00.9291677740 -56 54 47.868280757 11.24 11.48 11.04 11.067   [WC11] 267 0
34 NGC 6369 PN 17 29 20.4566510904 -23 45 34.771819248   16.6 12.00     [WC4] 317 0
35 PN M 1-25 PN 17 38 30.3160501176 -22 08 38.934269052   17.9       [WC6] 145 0
36 PN Hb 4 PN 17 41 52.8002065320 -24 42 08.330663196   18.4 17     [WC4] 219 1
37 PN H 1-29 WV* 17 44 13.8729577601 -34 17 32.824856894     14.90 16.04 14.90 [WC4/6] 70 0
38 PN M 3-15 PN 17 45 31.7096699160 -20 58 01.493896440           [WC4/6] 127 1
39 V* V4334 Sgr CV* 17 52 32.69352 -17 41 08.0160           F2Ia 373 0
40 PN M 1-30 PN 17 52 58.95 -34 38 22.6   16.6 16.4     ~ 106 0
41 IRAS 17514-1555 PN 17 54 21.13104 -15 55 52.0032           [WC11] 102 0
42 PN M 2-20 PN 17 54 25.32 -29 36 08.2     16.1     [WC5/6] 74 0
43 PN M 1-32 PN 17 56 20.11 -16 29 04.6   18.3 17.0     [WC4/5] 103 1
44 PN M 2-31 PN 18 13 16.0521431976 -25 30 05.320920636   13.3 13.60     [WC4/6] 100 0
45 PN SwSt 1 PN 18 16 12.2834104368 -30 52 07.906578996   12.1 11.10     [WC9/10] 294 0
46 PN M 2-34 PN 18 17 15.90 -23 58 53.7     15.00     [WC] 53 0
47 PN K 1-16 PN 18 21 52.1086837968 +64 21 53.406292104   14.44 14.96 15.26   PG1159 250 0
48 PN M 2-43 PN 18 26 40.0500205632 -02 42 57.364170912     15.7     [WC7/8] 120 0
49 PN Cn 1-5 PN 18 29 11.6500996872 -31 29 59.135208396   15.5 15.2 13.34   [WC5/6] 150 0
50 PN M 1-51 PN 18 33 29.05 -11 07 26.5           [WC4/6] 91 1
51 PN M 3-30 PN 18 41 14.938 -15 33 43.58     17.9     [WC2/3] 88 0
52 PN M 1-60 PN 18 43 38.0929948608 -13 44 49.280634744           [WC4] 84 0
53 PN M 1-61 PN 18 45 55.12 -14 27 37.9           ~ 108 0
54 SH 2-78 PN 19 03 10.0757173680 +14 06 58.775577876   17.633 17.660 17.608 17.543 DO 36 0
55 NGC 6751 PN 19 05 55.5383775432 -05 59 32.288861544   15.78 15.48     [WC4] 328 0
56 NGC 6765 PN 19 11 06.5583234216 +30 32 43.674073296           PG1159 73 1
57 PN M 4-13 PN 19 13 38.4236144616 +14 59 19.157634744           [WC4/5] 73 0
58 PN M 1-69 PN 19 13 53.890 +03 37 41.78   15.26 13.70     WC 29 0
59 IC 1297 PN 19 17 23.4475188000 -39 36 46.253665872     10.89     [WC3/4] 161 0
60 PN A66 58 PN 19 18 20.476 +01 46 59.62           [WC4] 316 0
61 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 952 0
62 IRAS 19367+2458 PN 19 38 52.1062311529 +25 05 32.465143958           [WC10] 30 0
63 NGC 6852 PN 20 00 39.2100674640 +01 43 40.921293540   17.70       PG1159 68 1
64 Hen 1-5 pA* 20 11 56.0595568008 +20 20 04.420944132 11.41 10.66 9.45     G8/K0Iae 508 0
65 Hen 2-459 PN 20 13 57.8909464128 +29 33 55.874044764   14.10 12.67     [WC9] 102 0
66 NGC 6905 PN 20 22 22.9919225472 +20 06 16.285052088   16.3 14.5     [WC3] 346 0
67 NGC 7026 PN 21 06 18.5723414928 +47 51 06.774735780   15.33 15.1     [WC3] 418 1
68 PN K 3-61 PN 21 30 00.7565699064 +54 27 27.195110712   15.9 14.8     [WC4/6] 75 0
69 PN A66 78 PN 21 35 29.3816259120 +31 41 45.449196108   13.04 13.25     [WC5] 327 0
70 PN Jn 1 PN 23 35 53.3214838680 +30 28 06.336745212   15.52 15.62     DOZ 107 0

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