Distances for Galactic planetary nebulae. II - A southern hemisphere survey

Details Distances for Galactic planetary nebulae. II - A southern hemisphere survey Distances for Galactic planetary nebulae. II - A southern hemisphere survey

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.259..635k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 259, no. 4, p. 635-651.

Astronomy and Astrophysics

Astronomy

40

Electron Density Profiles, Emission Spectra, Interstellar Matter, Planetary Nebulae, Southern Hemisphere, Distance, Galactic Radiation, Magellanic Clouds

Scientific paper

New integrated forbidden O II 3726, 3729 A doublet ratio observations are presented of 65 southern Galactic PN, and their distances are derived. Integrated forbidden S II 6716, 6731 A double observations are also given, and it is concluded that both density diagnostics yield the same densities for a large homogeneous data set. Regions of extended emission surrounding 23 of the objects are detected. Upper limits on the electron densities are derived for these regions, and it is concluded that the emission originate from regions of diffuse Galactic background emission.

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