J/ApJ/671/1669 Magellanic cloud PNe in the IR (Stanghellini+, 2007)
Spitzer infrared spectrograph observations of Magellanic cloud planetary
nebulae: the nature of dust in low-metallicity circumstellar ejecta.
Stanghellini L., Garcia-Lario P., Garcia-Hernandez D.A.,
Perea-Calderon J.V., Davies J.E., Manchado A., Villaver E., Shaw R.A.
<Astrophys. J., 671, 1669-1684 (2007)>
=2007ApJ...671.1669S 2007ApJ...671.1669S
ADC_Keywords: Magellanic Clouds ; Planetary nebulae
Keywords: dust, extinction - Magellanic Clouds - planetary nebulae: general
Abstract:
We present 5-40um spectroscopy of 41 planetary nebulae (PNe) in the
Magellanic Clouds, observed with the Infrared Spectrograph on board
the Spitzer Space Telescope. The spectra show the presence of a
combination of nebular emission lines and solid state features from
dust, superimposed on the thermal IR continuum. By analyzing the 25
LMC and 16 SMC PNe in our sample we found that the IR spectra of 14
LMC and four SMC PNe are dominated by nebular emission lines, while
the other spectra show solid state features.
Description:
The spectral data were acquired with the IRS on board the Spitzer
Space Telescope between 2005 July 14 and November 14 as part of a
General Observer program (No. 20443).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 62 41 Target selection
table2.dat 60 41 Observing Log
table3.dat 46 41 Characteristics of the IRS spectra
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See also:
J/MNRAS/234/583 : Abundances in Magellanic Cloud planetary nebulae (Monk+ 1988)
J/ApJ/365/471 : Planetary nebulae as standard candles. VI. (Jacoby+, 1990)
J/ApJS/75/407 : LMC + SMC PNe optical spectroscopy. I (Meatheringham+ 1991)
J/ApJS/76/1085 : LMC + SMC PNe optical spectroscopy. II (Meatheringham+ 1991)
J/ApJS/83/87 : LMC + SMC PNe optical spectroscopy. III (Vassiliadis+ 1992)
J/A+AS/102/451 : Emission-line stars and PNe in the SMC (Meyssonnier+ 1993)
J/ApJ/417/209 : Faint planetary nebulae in Magellanic Clouds (Jacoby+, 1993)
J/A+AS/116/95 : Magellanic Clouds PNe line intensities (Leisy+, 1996)
J/A+AS/121/407 : LMC planetary nebulae positions (Leisy+ 1997)
J/AJ/123/269 : New SMC planetary nebulae (Jacoby+, 2002)
J/ApJ/622/294 : STIS UV spectra of LMC planetary nebulae (Stanghellini+ 2005)
J/MNRAS/365/401 : New planetary nebulae in LMC (Reid+, 2006)
J/MNRAS/373/521 : Complete catalog of planetary nebulae in LMC (Reid+, 2006)
J/A+A/456/451 : Magellanic Clouds PNe abundances (Leisy+, 2006)
J/A+A/472/101 : Chemical evolution of SMC planetary nebulae (Idiart+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Object name (SMP LMC NNN or SMP SMC NNN)
14- 17 F4.2 arcsec R ? Radius
19- 33 A15 --- MType Morphological type
35- 64 A30 --- Notes Notes
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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- 12 A12 --- Name Object name (SMP LMC NNN or SMP SMC NNN)
13- 14 I2 h RAh Right ascension (J2000.0)
16- 17 I2 min RAm Right ascension (J2000.0)
19- 23 F5.2 s RAs Right ascension (J2000.0)
25 A1 --- DE- Declination sign (J2000.0)
26- 27 I2 deg DEd Declination (J2000.0)
29- 30 I2 arcmin DEm Declination (J2000.0)
32- 35 F4.1 arcsec DEs Declination (J2000.0)
37- 46 A10 "YYYY/MM/DD" Obs.Date Observation Date
48- 55 I8 --- ID Data set identification number
57- 60 A4 --- IRS IRS observing campaign
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Object name (SMP LMC NNN or SMP SMC NNN)
14- 16 I3 K Tdust Dust temperature of the continuum, fitted
as a blackbody
18- 22 F5.1 [mW/m2] logFIR Infrared flux derived from the integration of
the continuum dust spectra between 5 and 40um
24- 28 F5.2 --- IRE ?=- IR excess
30- 32 A3 --- DType Dust type (1)
35- 46 A12 --- Ext Excitation class of the PN, based on the
observed emission lines
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Note (1): 3 classes are defined, as follows:
F = featureless (no evidence of solid-state features)
CRD = Carbon-rich dust
ORD = Oxygen-rich dust
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Mar-2010