2020A&A...642A..71H


Query : 2020A&A...642A..71H

2020A&A...642A..71H - Astronomy and Astrophysics, volume 642A, 71-71 (2020/10-1)

Rapid evolution of [WC] stars in the Magellanic Clouds.

HAJDUK M.

Abstract (from CDS):

We obtained new spectra of fourteen Magellanic Cloud planetary nebulae with the South African Large Telescope to determine heating rates of their central stars and to verify evolutionary models of post-asymptotic giant branch stars. We compared new spectra with observations made in previous years. Five planetary nebulae showed an increase in excitation over time. Four of their central stars exhibit [WC] features in their spectra, including three new detections. This raises the total number of [WC] central stars of PNe in the Magellanic Clouds to ten. We compared determined heating rates of the four [WC] central stars with the He-burning post-asymptotic giant branch evolutionary tracks and the remaining star with the H-burning tracks. Determined heating rates are consistent with the evolutionary models for both H and He-burning post-asymptotic giant branch stars. The central stars of the PNe that show the fastest increase of excitation are also the most luminous in the sample. This indicates that [WC] central stars in the Magellanic Clouds evolve faster than H-burning central stars, and they originate from more massive progenitors.

Abstract Copyright: © ESO 2020

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

VizieR on-line data: <Available at CDS (J/A+A/642/A71): list.dat fits/*>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 24

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Number of rows : 24
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 LHA 115-N 1 PN 00 23 58.6303288807 -73 38 03.978615105           ~ 45 0
2 SMP SMC 12 PN 00 49 21.06 -73 52 58.6     18.536   17.983 ~ 16 0
3 LHA 115-N 42 PN 00 51 27.14 -72 26 11.7   16.32 16.741   16.922 ~ 59 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9937 1
5 LIN 302 PN 00 56 19.4713604941 -72 06 58.161111444   16.0 17.609   17.792 ~ 26 0
6 LIN 536 PN 01 24 11.8601125852 -74 02 32.160654873   17.12 17.589   17.716 ~ 34 0
7 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6040 1
8 CPD-69 177 WD* 03 10 31.0201840720 -68 36 03.381441176 10.757 11.413 11.394 11.47 11.558 DA3.0 244 0
9 SMP LMC 104A PN 04 25 32.1892538741 -66 47 16.279097550   17.2 17.36     ~ 13 0
10 2MASS J05073067-6908083 pA? 05 07 30.673 -69 08 08.34 15.534 16.563 16.656 15.42 16.680 ~ 20 0
11 SMP LMC 31 * 05 09 20.220 -67 47 25.02 17.001 17.815 17.117 15.470 16.582 ~ 43 0
12 MSX LMC 332 pA? 05 17 00.66 -69 19 30.5 18.896 19.566 19.039   18.705 ~ 15 0
13 2MASS J05193331-6655375 pA? 05 19 33.3219981168 -66 55 37.611359985 18.819 20.250 19.438   19.575 ~ 12 0
14 [BE74] 568 Em* 05 22 12.815 -69 43 29.01 17.471 18.236 17.759 16.640 16.604 ~ 18 0
15 2MASS J05224097-7119067 pA? 05 22 40.9845037219 -71 19 06.633392933 15.861 16.949 16.625 15.470 16.600 ~ 34 0
16 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15586 1
17 SMP LMC 64 pA* 05 27 35.6527028058 -69 08 56.379284844 15.897 16.651 16.408   15.563 ~ 35 0
18 SSTISAGEMC J052915.66-673247.4 pA? 05 29 15.6722225696 -67 32 47.583258458 15.945 17.093 18.76 16.01 17.264 ~ 42 0
19 HD 289002 * 06 45 13.3726265810 +02 08 14.688016523 10.06 10.62 10.44     B1 236 0
20 PN M 1-11 PN 07 11 16.6940677796 -19 51 02.897395901     13.5     WC10-11 139 0
21 PN M 1-12 PN 07 19 21.4686621026 -21 43 55.406123858     14.08     WC10-11 112 0
22 PN SaSt 2-15 PN 17 38 57.3716181503 -18 17 35.779247942   13.93 13.66 13.82   ~ 71 0
23 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12447 0
24 NAME Galactic Bulge reg ~ ~           ~ 3677 0

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2021.10.20-01:00:07

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