Interferometric observations of the ring nebula NGC 6888 in the forbidden O III line

Details Interferometric observations of the ring nebula NGC 6888 in the forbidden O III line Interferometric observations of the ring nebula NGC 6888 in the forbidden O III line

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..909l&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, Oct. 1988, p. 909-919. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, Nebulae, Oxygen Spectra, Visible Spectrum, Fabry-Perot Interferometers, Line Spectra, Radial Velocity, Ring Structures, Signal Processing

Scientific paper

The kinematics of the NGC 6888 ring nebula in the forbidden O III 5007 A line was investigated using a Fabry-Perot interferometer and a two-stage image converter in the focus of the 125- and 60-cm telescopes. The angular resolution was 10-12 arcsec and 18-24 arcsec, respectively, and the spectral resolution was 15 km/s. Line profiles obtained for 80 locations in the nebula show emission from the background H II regions and from the two sides of a thin expanding shell.

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