Optical spectroscopy of Magellanic Cloud planetary nebulae. I

Optical spectroscopy in the range 3300-7400 A is presented for a total of 30 planetary nebulae in the LMC and 11 in the SMC, with measurements of line intensities down to about 1 percent of H-beta. Reddening estimates from Balmer line ratios have been determined, and the line intensities dereddened...

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Bibliographic Details
Published in:The Astrophysical journal. Supplement series 1991-02, Vol.75 (2), p.407-424
Main Authors: MEATHERINGHAM, S. J, DOPITA, M. A
Format: Article
Language:English
Subjects:
640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources
Astronomy
BALMER LINES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Earth, ocean, space
ELECTRON DENSITY
ELECTRON TEMPERATURE
Exact sciences and technology
GALAXIES
Interstellar medium (ism) and nebulae in milky way
MAGELLANIC CLOUDS
MASS
NEBULAE
PLANETARY NEBULAE
SPECTRA
STAR EVOLUTION
Stellar systems. Galactic and extragalactic objects and systems. The universe
VISIBLE SPECTRA
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Summary:Optical spectroscopy in the range 3300-7400 A is presented for a total of 30 planetary nebulae in the LMC and 11 in the SMC, with measurements of line intensities down to about 1 percent of H-beta. Reddening estimates from Balmer line ratios have been determined, and the line intensities dereddened accordingly. Nebular forbidden O III electron temperatures and, where measurable, forbidden N II temperatures and forbidden S II densities are given. Forbidden O II electron densities are recalculated using appropriate electron temperatures. The forbidden S II and forbidden O II electron densities are found to correlate well. A number of spectra exhibit interesting spectral features, including symbiotic-type profiles, unidentified emission lines, and nonsimple Balmer decrements. These objects are discussed in some detail. Zanstra temperatures are derived for a total of 25 objects possessing detectable stellar continua. 57 refs.
ISSN:0067-0049
1538-4365
DOI:10.1086/191536