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Title:
NGC 2242 - A newly-discovered planetary nebula
Authors:
Shaw, Richard A.; Bidelman, William P.
Affiliation:
AA(Lick Observatory, Santa Cruz, CA), AB(Case Western University, Cleveland, OH)
Publication:
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Jan. 1987, p. 27-30. (PASP Homepage)
Publication Date:
01/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ABUNDANCE, EMISSION SPECTRA, LINE SPECTRA, PLANETARY NEBULAE, ELECTRON ENERGY, ION PRODUCTION RATES, RADIANT FLUX DENSITY
DOI:
10.1086/131951
Bibliographic Code:
1987PASP...99...27S

Abstract

The nebula NGC 2242 is found to be a previously unknown planetary nebula. Its emission-line fluxes and a finding chart are presented. The nebula is found to have very high ionization and high temperature (Te = 25,000K). The oxygen/hydrogen abundance ratio, derived by assuming a constant argon/oxygen ratio, is rather low (O/H = 8×10-5) and is consistent with the high-electron temperature.

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