Line splitting in the /O III/ 5007-A line from the Helix nebula

Details Line splitting in the /O III/ 5007-A line from the Helix nebula Line splitting in the /O III/ 5007-A line from the Helix nebula

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..127t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Jan. 1979, p. 127-131. Research sponsored by the Science Research

Astronomy and Astrophysics

Astronomy

8

Interstellar Gas, Line Spectra, Oxygen Spectra, Planetary Nebulae, Interstellar Radiation, Oxygen Ions, Spectrum Analysis

Scientific paper

An insect-eye Fabry-Pérot spectrograph has been used to obtain profiles of the [O III] λ5007 line from 32 positions on the Helix nebula (NGC 7293) north-east of the centre where the two "arms" of the helix overlap in the line of sight. The profiles show two components separated by ˜20 km/s over almost the entire region studied. The mean heliocentric radial velocity of this region is -22.5 km/s.

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