Utraviolet observations of the planetary nebula NGC 2242

Journal Article · Mon May 01 04:00:00 EDT 1989 · Publications of the Astronomical Society of the Pacific; (USA)

DOI:https://doi.org/10.1086/132465· OSTI ID:5595909

Garnett, D R; Dinerstein, H L ^[1]

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1. Texas Univ., Austin (USA)

IUE observations of NGC 2242 reveal strong emission lines of C IV, He II, semi-forbidden C III, and forbidden Ne IV, along with weaker emissions from O IV and N IV. It is found that the oxygen abundance is about 1/6 of the solar value for T(e) = 25,000 K, and that the N/H and Ar/H ratios are down by a factor of 2-3 from typical disk PN values. The present abundance pattern resembles that observed in the halo planetary DDDM-1, except for the unusually low C/O ratio in DDDM-1. 26 refs.

• OSTI ID: 5595909
• Journal Information: Publications of the Astronomical Society of the Pacific; (USA), Journal Name: Publications of the Astronomical Society of the Pacific; (USA) Vol. 101; ISSN PASPA; ISSN 0004-6280
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ARGON
CARBON
CHARGED PARTICLES
ELEMENTS
EMISSION SPECTRA
FLUIDS
GASES
HELIUM IONS
HYDROGEN IONS
IONS
NEBULAE
NEON
NONMETALS
OXYGEN IONS
PLANETARY NEBULAE
RARE GASES
SPECTRA
ULTRAVIOLET SPECTRA