Radio Galaxy Zoo Talk

bright triple with background compact source

  • WizardHowl by WizardHowl

    The compact spot of radio emission just below the lobe near the centre of the image is well aligned with a faint IR source and does not seem to fit with the symmetry of the rest of the emission, so I suspect this is a background object not related to the #overedge triple. The contours were joined so I was not able to mark them separately and flagged both the triple's core and the IR source behind the compact radio spot as associated with the radio emission.


  • ivywong by ivywong scientist, admin

    Good spotting! I agree with you that we seem to have both a foreground #overedge #triple set against a background #compact. Thanks 😃


  • JeanTate by JeanTate

    The core of the triple is SDSS J155140.30+103548.6, z_sp = 0.366 (giant) elliptical with prominent emission lines (H-alpha looks significantly broadened -> AGN?). It's apparently the BCG - or center - of a cataloged cluster, WHL J155140.3+103548 (per NED). No NED notes on its radio emission.

    Here's the SDSS field, centered on the core:

    enter image description here