Color composite | ATCA HI | Spitzer 8 micron | Spitzer 3.6 micron |
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The Circinus Galaxy as seen at different wavelengths. The three single-color panels show the ATCA HI gas distribution at an angular resolution of 15 arcsec (only the inner disk is shown here), the Spitzer 8 micron image (PAH emission + stars) and the Spitzer 3.6 micron image (stars).
Reference: For, Koribalski & Jarrett 2012.
The overall HI gas distribution of the Circinus Galaxy is much larger, see here.
Baerbel.Koribalski @ csiro.au