# 2003A&A...400..957G

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 Query : 2003A&A...400..957G

2003A&A...400..957G - Astronomy and Astrophysics, volume 400, 957-969 (2003/3-4)

Kinematics, turbulence and evolution of planetary nebulae.

GESICKI K., ACKER A. and ZIJLSTRA A.A.

Abstract (from CDS):

This paper discusses the location of a sample of planetary nebulae on the HR diagram. We determine the internal velocity fields of 14 planetary nebulae from high-resolution echelle spectroscopy, with the help of photoionization models. The mass averaged velocity is shown to be a robust, simple parameter describing the outflow. The expansion velocity and radius are used to define the dynamical age; together with the stellar temperature, this gives a measurement of the luminosity and core mass of the central star. The same technique is applied to other planetary nebulae with previously measured expansion velocities, giving a total sample of 73 objects. The objects cluster closely around the Schoenberner track of 0.61M, with a very narrow distribution of core masses. The masses are higher than found for local white dwarfs. The luminosities determined in this way tend to be higher by a factor of a few than those derived from the nebular luminosities. The discrepancy is highest for the hottest (most evolved) stars. We suggest photon leakage as the likely cause. The innermost regions of the non-[WC] nebulae tend to show strong acceleration. Together with the acceleration at the ionization front, the velocity field becomes U''-shaped. The presence of strong turbulent motions in [WC] nebulae is confirmed. Except for this, we find that the [WC] stars evolve on the same tracks as non-[WC] stars.

Journal keyword(s): planetary nebulae: general - stars: evolution - stars: Hertzsprung-Russell (HR) and C-M diagrams

Full paper

 Number of rows : 14
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NGC 2867 PN 09 21 25.3832468160 -58 18 40.626683604   12.0 10.30     [WO2] 297 0
2 PN PB 6 PN 10 13 15.9622567176 -50 19 59.563979688   17.4 17.6     [WO1] 133 0
3 PN M 2-6 PN 17 04 18.32832 -30 53 28.8816       15.650   ~ 75 0
4 PN M 4-3 PN 17 10 41.7794192424 -27 08 44.078638704     15.20     ~ 74 0
5 PN H 1-11 PN 17 21 17.7263264688 -22 18 35.517598344           ~ 69 0
6 PN M 3-7 PN 17 24 34.4529856560 -29 24 19.796240052     14.60     [WC] 87 0
7 PN M 3-10 PN 17 27 20.19 -28 27 51.2     14.40     ~ 92 0
8 PN M 1-20 PN 17 28 57.6165015264 -19 15 54.033719256           ~ 124 0
9 Hen 2-289 Sy* 17 49 48.2107694784 -37 01 27.797630520       13.828   M4/5:e 160 0
10 PN M 1-29 PN 17 50 17.9658145641 -30 34 54.987881214     14.00     ~ 88 1
11 PN Cn 2-1 PN 17 54 33.010 -34 22 21.15     12.70 14.47 13.70 ~ 133 0
12 PN H 1-46 PN 17 59 02.5031407080 -32 21 43.494698556     14.30     ~ 75 0
13 PN M 1-35 PN 18 03 39.30 -26 43 33.9     14.50     ~ 91 0
14 PN M 2-27 PN 18 03 52.5718384152 -31 17 47.161796424     14.40     [WC4]: 100 0

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2023.03.20-14:29:58

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