Echelle observations of the giant halo of the planetary nebula NGC 6543. II - Kinematics

Details Echelle observations of the giant halo of the planetary nebula NGC 6543. II - Kinematics Echelle observations of the giant halo of the planetary nebula NGC 6543. II - Kinematics

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..477b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Feb. 1, 1992, p. 477-487.

Astronomy and Astrophysics

Astronomy

33

Echelle Gratings, Planetary Nebulae, Stellar Envelopes, Stellar Evolution, Electron Energy, Forbidden Transitions, Line Spectra, Oxygen Spectra, Radial Velocity

Scientific paper

Spatially resolved observations at high spectral resolution of the forbidden O III 5007-A line profiles from the faint, giant halo of the planetary nebula NGC 6543 have been obtained with the Manchester echelle spectrometer combined with the Isaac Newton Telescope. These show that the halo is relatively kinematically inert, having FWHM of the turbulent components (including bulk motions) of the observed profiles of only 6.7 +/- 0.8 km/s. An upper limit on any possible systematic expansion of the halo was found to be 4.5 km/s. This is less than the anticipated expansion velocity of 10 km/s in a reg giant 'superwind'.

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