Spectrophotometric observations of planetary nebulae high above the Galactic plane.

Details Spectrophotometric observations of planetary nebulae high above the Galactic plane. Spectrophotometric observations of planetary nebulae high above the Galactic plane.

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...307..215c&link_type=abstract

Astronomy and Astrophysics, v.307, p.215

Astronomy and Astrophysics

Astrophysics

34

Planetary Nebulae, Ism: Abundances, Galaxy: Abundances

Scientific paper

Spectrophotometric observations at high signal-to-noise ratio for a sample of 62 planetary nebulae are presented, together with the plasma and abundance analyses. The objects were selected homogeneously from the `Strasbourg-ESO Catalogue of Galactic Planetary Nebulae' by their height above the disk (over 300pc) and their Hβ surface brightness (between 10^-12^ and 10^-14^mW.m^-2^.arcsec^-2^). The abundances of O, S, Ar, and Cl are tightly correlated. The N/O ratio shows a wide range of values, independent of He or O abundance.

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