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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 103 49 Summary of observed positions (tables 1+2)
See also: B/iso : ISO Observation Log of validated data (ISO Data Centre, 2001) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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
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.
Acknowledgements: Jere Kahanpaa
(End) Patricia Bauer [CDS] 08-Jul-2003
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