I can clearly see the object as a bright group of pixels in the IRAS image, but I don't see a damn thing at the spot they hilight in the AKARI image. Like, are they kidding or is this a crap article with the wrong image or something?
You'd have to read the actual paper [1] to understand this. It does not appear as a physical source in the plot because of how the dataset works. The image is only for reference regarding the position.