Paper: astro-ph/0601435
Date: Thu, 19 Jan 2006 15:55:17 GMT (205kb)

Title: Dusty Sources at the Galactic Center: The N- and Q-band view with VISIR

Authors: T. Viehmann, A. Eckart, R. Schoedel, J.-U. Pott and J. Moultaka

Comments: 18 pages, 4 figures, 1 table, accepted for publication in the
Astrophysical Journal
\\
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 May 2004.
The high resolution and sensitivity possible with VISIR enables us to
investigate a total of over 60 point-like sources, an unprecedented number for
the Galactic Center at these wavelengths. Combining these data with previous
results at shorter wavelengths (Viehmann et al. 2005) enables us to construct
SEDs covering the H- to Q-band regions of the spectrum, i.e. 1.6 to 19.5
$\mu$m. We find that the SEDs of certain types of Galactic Center sources show
characteristic features. We can clearly distinguish between luminous Northern
Arm bow-shock sources, lower luminosity bow-shock sources, hot stars, and cool
stars. This characterization may help clarify the status of presently
unclassified sources.

\\ ( http://arXiv.org/abs/astro-ph/0601435 , 205kb)