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4 papers · 2 filters
Sulfur, Chlorine, and Argon in Planetary Nebulae. IIA: Observations of a Southern Sample
J. B. Milingo, K. B. Kwitter, R. B. C. Henry +1
In this paper we present fully reduced and dereddened emission line strengths for a sample of 45 southern Type II planetary nebulae (PNe). The spectrophotometry for these PNe cover…
Sulfur, Chlorine, & Argon Abundances in Planetary Nebulae. IIB: Abundances in a Southern Sample
J. B. Milingo, R. B. C. Henry, K. B. Kwitter
We have undertaken a large spectroscopic survey of over 80 planetary nebulae with the goal of providing a homogeneous spectroscopic database between 3600-9600 Angstroms, as well as…
Sulfur, Chlorine, & Argon Abundances in Planetary Nebulae. I: Observations and Abundances in a Northern Sample
K. B. Kwitter, R. B. C. Henry
This paper is the first of a series specifically studying the abundances of sulfur, chlorine, and argon in Type II planetary nebulae (PNe) in the Galactic disk. Ratios of S/O, Cl/O…
Observational Tests Of Intermediate Mass Star Yields Using Planetary Nebulae
K. B. Kwitter, R. B. C. Henry
This paper summarizes a project designed to study abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metallicity. We collect abundances o…