ARG0002005 - which elliptical is the core?
None of the ellipticals in this rich cluster have z_sp, and there's more than one which is with a pixel or three of the central IR source/midpoint of the jets.
But I really like SDSS J115512.22+252601.9, because of the strange red blob ...
Oh, and there's even a hint of a linear feature, more or less corresponding to the S jet ... 😮
by DocR scientist
I'd bet on the SDSS galaxy which is marked in yellow on the attached image, the northern one of the close double. Beautiful little cluster around 0.3 .