J/A+A/405/999 Unidentified infrared bands (UIR) (Kahanpaeae+, 2003)
Unidentified infrared bands in the interstellar medium across the Galaxy.
Kahanpaeae J., Mattila K., Lehtinen K., Leinert C., Lemke D.
<Astron. Astrophys. 405, 999 (2003)>
=2003A&A...405..999K 2003A&A...405..999K
ADC_Keywords: Interstellar medium ; Infrared sources
Keywords: ISM: lines and bands - ISM: dust, extinction - infrared: ISM -
Galaxy: disk - galaxies: ISM
Abstract:
We present a set of 6-12µm ISOPHOT-S spectra of the general
interstellar medium of the Milky Way. This part of the spectrum is
dominated by a series of strong, wide emission features commonly
called the Unidentified Infrared Bands (UIR). The sampled area covers
the inner Milky Way from l=-60° to +60° with a ten-degree step
in longitude and nominal latitudes b=0°, ±1°. For each grid
position the actual observed direction was selected from IRAS 100µm
maps to minimize contamination by point sources and molecular clouds.
Description:
The dataset consists of 49 small raster maps made with the ISOPHOT-S
spectrometer onboard the Infrared Space Observatory (ISO). This
low-resolution (R∼60, Δλ∼0.1µm) instrument covers the
wavelength range λ=2.5-11.6µm with a small gap at
4.9-5.8µm. Observations spanned a large part of the lifetime of
ISO; the first dataset was recorded during revolution 81 (2/1996) and
the last during revolution 840 (3/1998). ISO Target Dedicated Time
(TDT) numbers for each observation are listed in table2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 103 49 Summary of observed positions (tables 1+2)
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See also:
B/iso : ISO Observation Log of validated data (ISO Data Centre, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Target name
8 A1 --- n_Name [a-d] Individual Note (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 19 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 31 F4.1 arcsec DEs Declination (J2000)
33- 38 F6.2 deg GLON Galactic longitude
40- 44 F5.2 deg GLAT Galactic latitude
46- 49 F4.2 10-10W/cm2/um/sr I6.2um ? UIR line intensity at 6.2um band
51- 54 F4.2 10-10W/cm2/um/sr e_I6.2um ? rms uncertainty on I6.2um
56- 59 F4.2 10-10W/cm2/um/sr I7.7um ? UIR line intensity at 7.7um band
61- 64 F4.2 10-10W/cm2/um/sr e_I7.7um ? rms uncertainty on I7.7um
66- 69 F4.2 10-10W/cm2/um/sr I8.6um ? UIR line intensity at 8.5um band
71- 74 F4.2 10-10W/cm2/um/sr e_I8.6um ? rms uncertainty on I8.6um
76- 80 F5.2 10-10W/cm2/um/sr I11.3um ? UIR line intensity at 11.3um band
82- 85 F4.2 10-10W/cm2/um/sr e_I11.3um ? rms uncertainty on I11.3um
87- 94 I8 --- TDT1 Target Dedicated Time (TDT) number
96-103 I8 --- TDT2 ? ISO second TDT number
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Note (1): Notes:
a: Very high dark current.
b: Has 7.7µm "ghost" band in the dark measurement.
c: Shows evidence of point source contamination in one of the four
pixels. This pixel was omitted from the average value calculation.
d: Observed 7 months later than other G+30 points.
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Acknowledgements: Jere Kahanpaa
(End) Patricia Bauer [CDS] 08-Jul-2003