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J/A+A/446/551       Extinctions at 7um & 15um from ISOGAL survey  (Jiang+, 2006)

Extinctions at 7µm and 15µm from the ISOGAL survey. Jiang B.W., Gao J., Omont A., Schuller F., Simon G. <Astron. Astrophys. 446, 551 (2006)> =2006A&A...446..551J
ADC_Keywords: Extinction ; Infrared sources ; Galactic plane ; Keywords: stars: AGB and post-AGB - stars: late-type - stars: mass loss - ISM: dust, extinction - infrared: ISM - infrared: stars Description: The ISOGAL PSC data have been associated with near-infrared 2MASS sources, consisting a five-band photometric catalogue. In comparison with the ISOGAL-DENIS PSC catalogue, the number of fields in the ISOGAL-2MASS PSC is increased by 43 thanks to the 2MASS inclusion of the northern ISOGAL field. This point source catalogue contains all parameters of 7µm or 15µm from the ISOGAL PSC, together with the J H Ks bands data from the 2MASS All-Sky PSC (see the paper for a complete description). Based on the ISOGAL-2MASS PSC, the extinction laws at 7µm and 15µm are derived for more than 120 sightlines in the inner Galactic plane. The extinction values at 7µm and 15µm were in terms of the near-infrared extinction in the Ks band. The ratios that E(Ks-[7])/E(J-Ks) and E(Ks-[7])/E(Ks-[15]) are also displayed in the tables (see the paper for a complete description). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file ext7.dat 53 129 7µm extinction data ext15.dat 56 76 15µm extinction data iso2mass.dat 298 50653 ISOGAL_2MASS Point sources Catalogue
See also: II/243 : The ISOGAL Point Source Catalogue - IGPSC (Omont+ 2003) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) Byte-by-byte Description of file: ext15.dat ext7.dat
Bytes Format Units Label Explanations
1- 14 A14 --- Ifield ISOGAL (II/243) Field Name 16- 19 I4 --- Filt LW number of filter (1) 21- 24 I4 ct Counts Number of sources in the final fitting (2) 26- 30 F5.2 --- Slope Slope k7 or Slope k15 (3) 32- 37 F6.3 --- e_Slope 1-sigma error of k7 or k15 slope 39- 43 F5.2 --- A/AKs Extinction value relative to A_Ks (4) 45- 50 F6.3 --- e_A/AKs 1-sigma error of A7/AKs or A15/AKs
Note (1): Filters 2, 5, 6 are in the shorter wavelength range (7µm), while filters 3, 9 are in the longer wavelength range (15µm). Note (2): The number of sources included in the final fitting in each field Note (3): The ratio between the E(Ks-[7]) and E(Ks-[15]) color excesses and E(J-Ks) Note (4): The extinction value at 7µm or 15µm in terms of the near-infrared extinction in the Ks band
Byte-by-byte Description of file: iso2mass.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [ISOGAL-P] 9- 24 A16 --- ISOGAL-P ISOGAL (<II/243>) Source Identifier (1) 26- 35 F10.6 deg RA2deg 2MASS Right Ascension (J2000.0) (2) 37- 46 F10.6 deg DE2deg 2MASS Declination (J2000.0) (2) 48- 56 F9.5 deg RAIdeg ISOGAL Right ascension (J2000.0) (3) 58- 66 F9.5 deg DEIdeg ISOGAL Declination (J2000.0) (3) 68- 76 F9.5 deg Glon 2MASS Galactic longitude (4) 78- 86 F9.5 deg Glat 2MASS Galactic latitude (4) 88-101 A14 --- Ifield Field name of ISOGAL 103-119 A17 --- 2MASS 2MASS (<II/246>) Source designation (5) 121-126 F6.3 mag Jmag 2MASS J selected default magnitude (6) 128-132 F5.3 mag Jcmsig J default magnitude uncertainty (6) 134-138 F5.3 mag e_Jmag J total magnitude uncertainty (6) 140-149 F10.1 --- JS/N J Signal-to-noise ratio (6) 151-156 F6.3 mag Hmag 2MASS H selected default magnitude (6) 158-162 F5.3 mag Hcmsig H default magnitude uncertainty (6) 164-168 F5.3 mag e_Hmag H total magnitude uncertainty (6) 170-179 F10.1 --- HS/N H Signal-to-noise ratio (6) 181-186 F6.3 mag Kmag 2MASS K selected default magnitude (6) 188-192 F5.3 mag Kcmsig K default magnitude uncertainty (6) 194-198 F5.3 mag e_Kmag K total magnitude uncertainty (6) 200-209 F10.1 --- KS/N K Signal-to-noise ratio (6) 211-215 F5.2 mag mag7 ISOGAL 7 micron magnitude (7) 217-220 F4.2 mag e_mag7 Uncertainty in 7 micron magnitude (7) 222 I1 --- filt7 LW number of filter used at 7 micron (7) 224 I1 arcsec pfov7 Pixel field of view at 7 micron (7) 226-231 F6.2 pix xpos7 X-position on ISOGAL final 7 micron image (7) 233-238 F6.2 pix ypos7 Y-position on ISOGAL final 7 micron image (7) 240 I1 --- npix7 [0,7] Npix flag at 7 micron (7) 242 I1 --- mesh7 [0,3] Mesh flag at 7 micron (7) 244 I1 --- edge7 [0,1] Edge flag at 7 micron (7) 246 I1 --- qual7 [0,4] Global quality flag at 7 micron (7) 248-252 F5.2 mag mag15 ISOGAL 15 micron magnitude (7) 254-257 F4.2 mag e_mag15 Uncertainty in 15 micron magnitude (7) 259 I1 --- filt15 LW number of filter used at 15 micron (7) 261 I1 arcsec pfov15 Pixel field of view at 15 micron (7) 263-268 F6.2 pix xpos15 X-position on ISOGAL final 15 micron image (7) 270-275 F6.2 pix ypos15 Y-position on ISOGAL final 15 micron image (7) 277 I1 --- npix15 [0,7] Npix flag at 15 micron (7) 279 I1 --- mesh15 [0,3] Mesh flag at 15 micron (7) 281 I1 --- edge15 [0,1] Edge flag at 15 micron (7) 283 I1 --- qual15 [0,4] Global quality flag at 15 micron (7) 285-289 F5.2 arcsec distII Distance 7 to 15 micron associated sources 291 I1 --- assII [0,4]? 7-15 micron association quality flag (8) 293-297 F5.2 arcsec distIM ? Distance ISOGAL to 2MASS associated sources
Note (1): ISOGAL source name, see Cat. II/243 Note (2): The ISOGAL-2MASS association source's 2MASS coordinates (RAdeg and DEdeg) Note (3): The ISOGAL-2MASS association source's ISOGAL coordinates, not the final adopted coordinates (RAdeg and DEdeg) used in the ISOGAL-DENIS PSG Note (4): The Galactic coordinates were calculated by the 2MASS equatorial coordinates, using the 'GLACTC' procedure in the IDL ASTRONOMY USER'S LIBRARY. Note (5): 2MASS source name, see Cat. II/246 Note (6): J, H, K magnitude and other parameters from the 2MASS All-Sky PSG, see Cat. II/246 Note (7): 7µm, 15µm magnitude and other parameters from the ISOGAL-DENIS PSG, see Cat. II/243 Note (8): 7-15 micron association quality flag, see Cat. II/243
Acknowledgements: Jian Gao, jiangao(at)bnu.edu.cn
(End) Jiang B.W., Gao J. [Beijing Normal Univ.], P. Vannier [CDS] 08-Dec-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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