M77 (IMAGE)
Caption
(Left) The newly discovered, extremely?diffuse structures around M77. The innermost color part of the picture shows the bright part of the galaxy (from SDSS: see the center of Figure 1). The middle part in red-brown is the contrast-enhanced expression of the faint one-arm structure (labeled as "Banana") to the right, as well as the ripple structure (labeled as "Ripple") to the left. All the fore/background objects unrelated to M77 are removed during the process. The outermost monochrome part shows the faint ultra-diffuse structures in yellow circles (labelled as "UDO-SE", "UDO-NE", "UDO-SW"). A deep look at them indicates the latter two ("UDO-NE", "UDO-SW") constitute a part of the large loop-like structure. (Right) Artist's impression of M77. The illustration in the right is created and copyrighted by Mr. Akihiro Ikeshita.
Credit
(Left) NAOJ ,(Right) Akihiro Ikeshita
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