2001A&A...378..587H


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET20:57:50

2001A&A...378..587H - Astronomy and Astrophysics, volume 378, 587-596 (2001/11-1)

The electron temperature of the inner halo of the Planetary Nebula NGC 6543.

HYUNG S., MELLEMA G., LEE S.-J. and KIM H.

Abstract (from CDS):

We investigate the electron temperature of the inner halo and nebular core regions of NGC 6543, using archival Hubble Space Telescope ( HST) Wide Field Planetary Camera 2 (WFPC2) images taken through narrow band [OIII] filters. Balick et al. (2001AJ....121..354B) showed that the inner halo consists of a number of spherical shells. We find the temperature of this inner halo to be much higher (∼15000K) than that of the bright core nebula (∼8500K). Photo-ionization models indicate that hardening of the UV radiation from the central star cannot be the main source of the higher temperature in the halo region. Using a radiation hydrodynamic simulation, we show that mass loss and velocity variations in the AGB wind can explain the observed shells, as well as the higher electron temperature.

Abstract Copyright:

Journal keyword(s): hydrodynamics - stars: AGB and post-AGB - stars: winds, outflows - ISM: kinematics and dynamics - planetary nebulae: individual: NGC 6543

Simbad objects: 5

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Number of rows : 5

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 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2156 0
2 PN Hb 5 PN 17 47 56.20 -29 59 39.6   10.50 10.78     ~ 253 0
3 NGC 6543 PN 17 58 33.4042519454 +66 37 58.748961810   11.09 11.28     [WC] 1126 1
4 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 835 1
5 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2338 1

    Equat.    Gal    SGal    Ecl

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2020.10.31-20:57:50

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