Radio Galaxy Zoo Talk

ARG00004bh: interesting overlap, or ...?

  • JeanTate by JeanTate

    Here's the SDSS field:

    enter image description here

    The radio morphology is ambiguous: bright core with a jet with three blobs? fainter core with asymmetrically bright jets (one ending in a bright lobe)? something else?

    To the left of the nice big local Eos (edge-on spiral) are several very faint SDSS sources, galaxies, with quite uncertain photometric redshifts (but all > 0.3): SDSS J113931.54+603314.8 (z_ph ~0.66), SDSS J113931.14+603319.5 (~0.37), SDSS J113931.53+603304.1 (~0.34); any of these could be the core I guess. The first one is closest to the IR source to the left of the spiral.

    If the brightest part of the complex radio source is the core, perhaps it's an AGN in the background, behind the disk and dust lane of the Eos? If so, some exciting opportunities for gravitational lensing?

    Or, even more wildly, perhaps this radio source is actually associated with the Eos? 😮


  • WizardHowl by WizardHowl in response to JeanTate's comment.

    I suspect this is an #hourglass oriented to point partly towards our line-of-sight and is really fairly symmetrical. The first object you name, SDSS J113931.54+603314.8 is ideally positioned and from the redshift and IR is probably an elliptical, although perhaps a lenticular as it seems extended (although it is very faint and it would need a much higher resolution image to be sure of this).

    If it is SDSS J113931.54+603314.8 then there might be a cluster obscured by the foreground EoS, so potentially a chance of some lensing, although it might need something like Euclid to detect it.