J/ApJS/75/407 LMC & SMC PNe optical spectroscopy. I (Meatheringham+ 1991)
Optical spectroscopy of Magellanic Cloud planetary nebulae. I.
Meatheringham S.J., Dopita M.A.
<Astrophys. J. Suppl. Ser. 75, 407 (1991)>
=1991ApJS...75..407M 1991ApJS...75..407M (SIMBAD/NED BibCode)
ADC_Keywords: Nebulae, planetary ; Magellanic Clouds ; Spectroscopy
Keywords: galaxies: Magellanic clouds - nebulae: planetary
Abstract:
We present optical spectroscopy in the range 3300-7400A for a total of
30 planetary nebulae in the LMC and 11 in the SMC, with measurements
of line intensities down to ∼1% of Hβ. Agreement with other
authors is on the whole excellent, especially for lines >+10%-20% of
Hβ. Reddening estimates from Balmer line ratios have been
determined, and the line intensities dereddened accordingly. Nebular
[O III] electron temperature and, where measurable, [N II]
temperatures and [S II] densities are given. [O II] electron densities
are recalculated using appropriate electron temperatures. 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. These temperatures are in agreement with
the few published values from various methods, and preliminary
photoionization modeling of this sample. The homogeneity and size of
the sample make it possible to investigate several interesting
correlations between measured parameters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4a 38 1464 Corrected line intensities
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See also:
J/MNRAS/234/583 : Abundances in Magellanic Cloud planetary nebulae
J/ApJS/76/1085 : PNe Magellanic Cloud optical spectroscopy. II
J/ApJS/83/87 : PNe Magellanic Cloud optical spectroscopy. III
J/A+AS/121/407 : LMC planetary nebulae positions (Leisy+ 1997)
Byte-by-byte Description of file: table4a
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm Lambda Wavelength
6- 22 A17 --- ID Identification of line
24- 29 A6 --- PN Planetary nebula name
31- 36 F6.1 --- I(Lambda) ? Measured line intensity (I(Hβ)=100)
37 A1 --- n_I(Lambda) [ns] n: No ; s: Saturated
38 A1 --- u_I(Lambda) [?] Uncertainty flag on I(Lambda)
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Acknowledgements: Pierre Leisy
(End) Patricia Bauer [CDS] 03-Oct-1996