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Gemini Imaging of Mid‐Infrared Emission from the Nuclear Region of Centaurus A

  • Authors: James T. Radomski, Christopher Packham, N. A. Levenson, Eric Perlman, Lerothodi L. Leeuw, Henry Matthews, Rachel Mason, James M. De Buizer, Charles M. Telesco, and Manuel Orduna

Radomski et al. 2008 The Astrophysical Journal 681 141.

  • Provider: AAS Journals

Caption: Fig. 2.

Azimuthally averaged radial profiles of Cen A in comparison to the PSF. Solid lines represent the galaxy, while dotted lines represent the 3 σ upper and lower limit in the PSF FWHM size based on the total standard deviation of the PSFs at each wavelength. These images represent a comparison of the fully stacked galaxy data (33.3 minutes on‐source at 8.8 μm, left; 25.8 minutes on‐source for 18.3 μm, right) compared to a stack of all PSFs that were taken between galaxy observations. The dash‐dotted line represents the measurement of Cen A at 8.8 μm from Fig. 2 of K03. Our 3 σ upper on the PSF is very close to their single PSF measurement. Thus, their 0.17﹩\arcsec﹩ size measurement is likely due to seeing.

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