Keywords
Metal Abundances:Planetary Nebulae
Planetary Nebulae:Galactic Distribution
Planetary Nebulae:Metal Abundances
Planetary Nebulae:Galactic Distribution
Planetary Nebulae:Metal Abundances
How to Cite
Vertical abundance gradients of planetary nebulae. (1988). Revista Mexicana De Astronomía Y Astrofísica, 16(1), 105-109. https://astronomia.unam.mx/journals/rmxaa/article/view/1988rmxaa..16..105f
Abstract
The existence of vertical abundance gradients from galactic planetary nebulae is examined. A large sample containing over 90 PN of Peimbert types I, II, III and IV is considered, for which reliable abundances and distances are available. It is found that the disk type II PN show no measurable gradients, while PN of types II, III, and IV taken together present vertical gradients of O/H, S/H, Ne/H, and Ar/H compatible with the known variations of heavy element abundances perpendicular to the galactic plane.Similar Articles
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