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Astron. Astrophys. 358, 321-331 (2000)


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Modeling emission lines of 8 northern planetary nebulae *

C. Neiner 1,2, A. Acker 1, K. Gesicki 3 and R. Szczerba 4

1 Observatoire de Strasbourg, 11, rue de l'université, 67 000 Strasbourg, France (acker@astro.u-strasbg.fr)
2 Observatoire de Paris-Meudon, 5, place Jules Janssen, 92195 Meudon Cedex, France (Coralie.Neiner@obspm.fr)
3 Centrum Astronomii UMK, ul. Gagarina 11, 87-100 Toruñ, Poland (gesicki@astri.uni.torun.pl)
4 Nicolaus Copernicus Astronomical Center, ul. Rabianska 8, 87-100 Toruñ, Poland (szczerba@ncac.torun.pl)

Received 21 January 2000 / Accepted 11 April 2000

Abstract

In order to constrain the nebular density distribution and velocity field, we model nebular lines profiles obtained at very high spectral resolution. The method and computer code applied to 2-3 nebular lines were described in earlier publications. In the present work we analyse 4-11 spectral lines observed simultaneously with the spectrometer ELODIE (R=42 000) for 8 planetary nebulae. For five analyzed nebulae with a [WC]-type nucleus, we found highly broadened profiles implying possible turbulent motions.

Key words: ISM: planetary nebulae: general – turbulence – stars: Wolf-Rayet

* Based on observations taken at the Observatoire de Haute-Provence du CNRS

Send offprint requests to: A. Acker

© European Southern Observatory (ESO) 2000

Online publication: June 26, 2000

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