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19992015
most citedA New Look At Carbon Abundances In Planetary Nebulae. IV. Implications For Stellar Nucleosynthesis

68 citations · 299 across the 9 of their papers we have counts for

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astro-ph1999★ 68 cited

A New Look At Carbon Abundances In Planetary Nebulae. IV. Implications For Stellar Nucleosynthesis

R. B. C. Henry, K. B. Kwitter, J. A. Bates

This paper is the fourth and final report on a project designed to study carbon abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metall…

astro-ph1999★ 57 cited

Morphology and Composition of the Helix Nebula

R. B. C. Henry, K. B. Kwitter, R. J Dufour

We present new narrow-band filter imagery in H-alpha and [N II] 6584 along with UV and optical spectrophotometry measurements from 1200 to 9600 Angstroms of NGC 7293, the Helix Neb…