J/ApJ/622/294 STIS UV spectra of LMC planetary nebulae (Stanghellini+, 2005)
Space telescope imaging spectrograph ultraviolet spectra of Large Magellanic
Cloud planetary nebulae: a study of carbon abundances and stellar evolution.
Stanghellini L., Shaw R.A., Gilmore D.
<Astrophys. J., 622, 294-318 (2005)>
=2005ApJ...622..294S 2005ApJ...622..294S (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Planetary nebulae
Keywords: Magellanic Clouds - nuclear reactions, nucleosynthesis, abundances -
planetary nebulae: general - stars: evolution - ultraviolet: ISM
Abstract:
We acquired spectra of 24 LMC planetary nebulae (PNs) in the
1150-3000Å range in order to determine carbon and other ionic
abundances. The sample more than doubles the number of LMC PNs with
high-quality UV spectra in this wavelength range and whose optical
images are available in the Hubble Space Telescope archive. The Space
Telescope Imaging Spectrograph was used with a very large aperture to
obtain virtually slitless spectra; thus, the monochromatic images in
the major nebula emission lines are also available. The analysis of
the data shows extremely high quality spectra. This paper presents the
emission lines identified and measured and the calculation of the
ionic abundances of the emitting carbon and other ions, as well as
total carbon abundance.
Description:
We observed 24 LMC PNs using the STIS MAMA detectors with the
first-order G140L and G230L gratings for long-slit spectroscopy,
covering the NUV-FUV wavelength range from 1150 to 3100Å.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 42 24 List of the observed LMC planetary nebulae
table2.dat 105 215 Observed and corrected emission line flux ratios
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See also:
J/A+AS/116/95 : Magellanic Clouds PNe line intensities (Leisy+, 1996)
J/MNRAS/365/401 : New planetary nebulae in LMC (Reid+, 2006)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Planetary nebula name
9- 19 A11 --- SName Simbad name
21- 22 I2 h RAh Hour of Right Ascension (J2000.0)
24- 25 I2 min RAm Minute of Right Ascension (J2000.0)
27- 30 F4.1 s RAs Second of Right Ascension (J2000.0)
32 A1 --- DE- Sign of the Declination (J2000.0)
33- 34 I2 deg DEd Degree of Declination (J2000.0)
36- 39 F4.1 arcmin DEm Arcminute of Declination (J2000.0)
41- 42 I2 arcsec DEs ? Arcsecond of Declination (J2000.0)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Planetary nebula name
9- 18 A10 0.1nm Lambda Laboratory wavelength in Angstroms
20- 26 A7 --- ID Ion identification
28- 31 F4.2 --- F/Fb Flux relative to Hβ
33- 37 F5.3 --- cG Galactic logarithmic extinction constant
39- 43 F5.3 --- cLMC LMC logarithmic extinction constant
45- 50 F6.3 --- I/Ib Corrected flux relative to Hβ
52-105 A54 --- Note Additional comments on the measured flux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 18-May-2006