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J/ApJ/642/861 N-band imaging of the Galactic Center (Viehmann+, 2006)
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Beginning of ReadMe :J/ApJ/642/861 N-band imaging of the Galactic Center (Viehmann+, 2006)
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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
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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.,
1.6-19.5mum.
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
(8-13mum), as well as the 18.7 and 19.5mum (Deltalambda=0.88
and 0.40mum) filters in the Q band, were used.