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A mid-infrared survey of the inner 2 × 1.5 degrees of the Galaxy with Spitzer/IRAC

Stolovy, S. and Ramirez, S. and Arendt, R. G. and Cotera, A. and Yusef-Zadeh, F. and Law, C. and Gezari, D. and Sellgren, K. and Karr, J. and Moseley, H. and Smith, H. A. (2006) A mid-infrared survey of the inner 2 × 1.5 degrees of the Galaxy with Spitzer/IRAC. Journal of Physics: Conference Series, 54 . pp. 176-182. ISSN 1742-6596. doi:10.1088/1742-6596/54/1/030.

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We present a survey of Spitzer Space Telescope/IRAC observations of the central 2 × 1.5 degrees (265 × 200 pc) of the Galaxy at 3-8 μm. These data represent the highest spatial resolution and sensitivity large-scale map made to date of the Galactic Center (GC) at mid-infrared wavelengths. The IRAC data provide a census of the optically obscured stellar sources as well as a detailed map of the highly filamentary structure in the interstellar medium. The diffuse emission is dominated by PAH emission from small grains in star-forming regions. Dark clouds displaying a large variety of sizes and morphologies are imaged, many of which remain opaque at IRAC wavelengths. Using a multiwavelength comparison, we determine which objects are likely to be in the foreground and which are located at the GC. We find no counterparts at IRAC wavelengths to the unique system of linear, nonthermal radio filaments present at the GC.

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Law, C.0000-0002-4119-9963
Additional Information:© Institute of Physics and IOP Publishing Limited 2006. Galactic Center Workshop 2006 — From the Center of the Milky Way to Nearby Low-Luminosity Galactic Nuclei, Bad Honnef, Germany, 18 to 22 April 2006. Journal of Physics: Conference Series, Volume 54, 2006.
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6906
Deposited By: Archive Administrator
Deposited On:02 Jan 2007
Last Modified:12 Jul 2022 19:43

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