2015A&A...573A..65H


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET19:42:55

2015A&A...573A..65H - Astronomy and Astrophysics, volume 573A, 65-65 (2015/1-1)

Evolution of the central stars of young planetary nebulae.

HAJDUK M., VAN HOOF P.A.M. and ZIJLSTRA A.A.

Abstract (from CDS):

The evolution of central stars of planetary nebulae was so far documented in just a few cases. However, spectra collected a few decades ago may provide a good reference for studying the evolution of central stars using the emission line fluxes of their nebulae. We investigated evolutionary changes of the [OIII] 5007Å line flux in the spectra of planetary nebulae. We compared nebular fluxes collected during a decade or longer. We used literature data and newly obtained spectra. A grid of cloudy models was computed using existing evolutionary models, and the models were compared with the observations. An increase of the [OIII] 5007Å line flux is frequently observed in young planetary nebulae hosting H-rich central stars. The increasing nebular excitation is the response to the increasing temperature and hardening radiation of the central stars. We did not observe any changes in the nebular fluxes in the planetary nebulae hosting late-type Wolf-Rayet (WR) central stars. This may indicate a slower temperature evolution (which may stem from a different evolutionary status) of late-[WR] stars. In young planetary nebulae with H-rich central stars, the evolution can be followed using optical spectra collected during a decade or longer. The observed evolution of H-rich central stars is consistent with the predictions of the evolutionary models provided in the literature. Late-[WR] stars possibly follow a different evolutionary path.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: evolution - planetary nebulae: general

VizieR on-line data: <Available at CDS (J/A+A/573/A65): table2.dat table4.dat>

Simbad objects: 36

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Number of rows : 36

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 CPD-69 177 WD* 03 10 31.0201840720 -68 36 03.381441176 10.757 11.413 11.394 11.47 11.558 DA3.0 227 0
2 PN M 1-6 PN 06 35 45.1225761631 -00 05 37.414428023     15.84     O6-9I 108 1
3 HD 289002 * 06 45 13.3726265810 +02 08 14.688016523 10.06 10.62 10.44     B1 224 0
4 PN M 1-11 PN 07 11 16.6940677796 -19 51 02.897395901     13.5     WC10-11 136 0
5 PN M 1-12 PN 07 19 21.4686621026 -21 43 55.406123858     14.08     WC10-11 109 0
6 NGC 2392 PN 07 29 10.7669120392 +20 54 42.478515772   10.28 9.68     O6f 693 0
7 WRAY 16-105 PN 12 08 25.30 -64 12 08.0     13.00     ~ 38 0
8 WRAY 16-107 PN 12 09 10.2069547927 -58 42 37.284999317     15.20     ~ 33 0
9 WRAY 16-194 PN 15 58 08.1036164810 -55 41 50.345148875     15.60     ~ 84 0
10 WRAY 16-198 PN 15 59 57.63 -55 55 33.0   15.88 15.15     [WC9] 124 0
11 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 433 1
12 PN SaSt 2-15 PN 17 38 57.3716181503 -18 17 35.779247942   13.93 13.66 13.82   ~ 68 0
13 PN M 1-26 PN 17 45 57.6652777318 -30 12 00.874208077   12.89 12.08 12.00   [WR] 202 0
14 PN H 2-25 PN 17 49 00.481 -23 42 54.59           ~ 57 0
15 V* V4334 Sgr NL* 17 52 32.69 -17 41 08.0   12.01       F2Ia 322 0
16 PN M 1-30 PN 17 52 58.95 -34 38 22.6   16.6 16.4     ~ 96 0
17 PN M 1-32 PN 17 56 20.11 -16 29 04.6   18.3 17.0     [WC4/5] 90 1
18 NGC 6572 PN 18 12 06.3140077888 +06 51 13.030152295   9.3 10.8     [WC] 735 0
19 PN SwSt 1 PN 18 16 12.2731488024 -30 52 07.796394989   12.1 11.10     [WC9/10] 277 0
20 PN Cn 3-1 PN 18 17 34.1015205519 +10 09 03.306489008   12.93 12.49 12.35   07Ib(f) 206 0
21 PN M 1-51 PN 18 33 29.05 -11 07 26.5           [WC4/6] 84 1
22 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2486 0
23 * 4 Aql Be* 18 44 49.9381980 +02 03 36.136039   4.948 5.005     B9V 91 0
24 PN H 2-48 PN 18 46 35.1189996080 -23 26 48.246734570     13     OIII-V 80 0
25 PN Hu 2-1 PN 18 49 47.56755 +20 50 39.4576     13.3     ~ 262 0
26 PN Sp 4-1 PN 19 00 26.5472204499 +38 21 07.272597555       15.26   O? 28 0
27 PN A66 58 PN 19 18 20.476 +01 46 59.62           [WC4] 283 0
28 * iot Cyg PM* 19 29 42.3587204 +51 43 47.205830   3.899 3.755     A5V 123 0
29 HD 184738 PN 19 34 45.2337512278 +30 30 58.951476338   10.41 10.44     [WC9] 915 0
30 PN M 1-73 PN 19 41 09.2938857237 +14 56 58.982287390           O3.5If 70 1
31 NGC 6833 PN 19 49 46.5751757576 +48 57 40.076934646           ~ 165 0
32 IC 4997 PN 20 20 08.7615653034 +16 43 53.993812400   11.94 11.15     [WC7/8] 527 0
33 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2308 1
34 IC 5117 PN 21 32 30.97 +44 35 47.5     16.7     ~ 285 0
35 EGGR 150 WD* 21 52 25.3788480672 +02 23 19.576520492 11.942 12.732 12.743 12.839 12.938 DA2.8 162 0
36 PN Hb 12 PN 23 26 14.8207203464 +58 10 54.538636094   13.51 11.49 12.44   Oe 312 0

    Equat.    Gal    SGal    Ecl

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2020.02.17-19:42:55

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