Internal motions in planetary nebulae

Details Internal motions in planetary nebulae Internal motions in planetary nebulae

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110..105s&link_type=abstract

Astronomy and Astrophysics, vol. 110, no. 1, June 1982, p. 105-110. Research supported by the Consiglio Nazionale delle Ricerch

Astronomy and Astrophysics

Astrophysics

45

Astronomical Spectroscopy, Forbidden Bands, Gas Expansion, Oxygen Spectra, Planetary Nebulae, Radial Velocity, Image Tubes, Oxygen Ions, Radii, Velocity Distribution

Scientific paper

In order to study the velocity field existing in planetary nebulas, a spectroscopic survey was carried out on the forbidden O III emissions of twenty-six such nebulas. The results confirm that the expansion velocity is an increasing function of the radius of the nebula for radii less than 0.2 pc. The expansion velocity versus radius is plotted for the nebulas, and theoretical predictions can interpret the trend, at least qualitatively.

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