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J/ApJ/642/861        N-band imaging of the Galactic Center     (Viehmann+, 2006)

Dusty sources at the Galactic Center the N- and Q-band views with VISIR. Viehmann T., Eckart A., Schodel R., Pott J.-U., Moultaka J. <Astrophys. J., 642, 861-867 (2006)> =2006ApJ...642..861V
ADC_Keywords: Photometry, classification ; Photometry, infrared Keywords: Galaxy: center - infrared: stars Abstract: We present mid-infrared N- and Q-band photometry of the Galactic center from images obtained with the mid-infrared camera VISIR at the ESO VLT in 2004 May. The high resolution and sensitivity possible with VISIR enable us to investigate a total of over 60 pointlike sources, an unprecedented number for the Galactic center at these wavelengths. Combining these data with previous results at shorter wavelengths (Viehmann and coworkers, Cat. J/A+A/433/117) enables us to construct SEDs covering the H- to Q-band regions of the spectrum, i.e., 1.6-19.5µm. Description: During the commissioning of the VISIR mid-infrared imager/spectrograph at the ESO VLT (UT3, Melipal), the Galactic center was observed on 2004 May 7-11. Many narrowband filters spanning the whole N band (8-13µm), as well as the 18.7 and 19.5µm (Δλ=0.88 and 0.40µm) filters in the Q band, were used. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 82 64 Extinction-corrected flux densities of compact N-band sources
See also: J/A+A/433/117 : L- + M-band imaging of the Galactic Center (Viehmann+, 2005) J/A+AS/97/587 : JHK photometry of Galactic center stars (Ruelas-Mayorga+ 1993) J/ApJ/470/864 : JHKL photometry of the Galactic Center (Blum+, 1996) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- [VES2006] Sequential number ([VES2006] NN in Simbad) 3 A1 --- f_[VES2006] [c] Flag on [VES2006] (1) 5- 15 A11 --- OName Other name 16 A1 --- f_OName [c] Flag on OName (1) 18- 22 F5.2 arcsec oRA Right ascension offset (2) 24- 29 F6.2 arcsec oDE Declination offset (2) 31- 35 F5.2 Jy F1.6 ? 1.6µm flux density (3) 37- 40 F4.2 Jy F2.1 ? 2.1µm flux density (3) 42- 46 F5.2 Jy F3.8 ? 3.8µm flux density (3) 48- 52 F5.2 Jy F4.7 ? 4.7µm flux density (3) 54- 58 F5.2 Jy F8.6 8.6µm flux density (3) 60- 64 F5.2 Jy F11.3 ? 11.3µm flux density (3) 66- 70 F5.2 Jy F12.8 ? 12.8µm flux density (3) 72- 76 F5.2 Jy F18.7 ? 18.7µm flux density (3) 78- 82 F5.2 Jy F19.5 ? 19.5µm flux density (3)
Note (1): A "c" indicates a lower luminosity bow shock source (see Section 3.2.1). Note (2): Position offsets are relative to IRS 7 (17:45:40.052-29:00:22.659, instead of -29 00 33.659 as indicated in the paper); see Reid et al. 1999ApJ...524..816R, 2003ApJ...587..208R) and are accurate to ±0.15". Note (3): Photometry is accurate to ±30%, or ±50% for sources fainter than 0.5Jy. The corresponding aperture size is approximately 1".
History: From electronic version of the journal
(End) Marianne Brouty [CDS] 20-Jul-2008
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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