Published May 1989
| Version v1
Journal article
Utraviolet observations of the planetary nebula NGC 2242
Description
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
Additional details
Publishing Information
- Journal Title
- Publications of the Astronomical Society of the Pacific
- Journal Volume
- 101
- Series
- Publ. Astron. Soc. Pac.
- Journal Page Range
- 541-546
- ISSN
- 0004-6280
- CODEN
- PASPA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21012503
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ARGON; CARBON; CHEMICAL COMPOSITION; EMISSION SPECTRA; HELIUM IONS; HYDROGEN IONS; NEON; OXYGEN IONS; PLANETARY NEBULAE; ULTRAVIOLET SPECTRA
- Descriptors DEC
- CHARGED PARTICLES; ELEMENTS; IONS; NEBULAE; NONMETALS; RARE GASES; SPECTRA