Radio Galaxy Zoo Talk

ARG0003bcu interesting emission, asymmetric triple? restarted? hybrid?

  • ChrisMolloy by ChrisMolloy

    Here's ARG0003bcu, (which has an ARG cross reference, ARG0003bd6) an #overedge, possibly #restarted, #triple; or a #hybrid emission, with a separate #noir, #nooptical, #ifrs, #compact lobe to the SW.

    enter image description here

    The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
    thread.

    The host at the centre of the lobes is SDSS J084600.36+070424.6, a quite spectacular looking #QSO, which has a z_sp=0.342 +/-0.00006. It has a number of radio references in NED and SIMBAD, as well as an ALLWISE reference, ALLWISE J084600.36+070424.7.

    SDSS J084600.36+070424.6

    enter image description here

    This emission is also listed on page 5 of the How to describe the radio morphology? thread, which has some interesting, pertinent, observations as to the possible radio morphology:

    What's not obvious is the radio morphology. Sure, there's a really bright #core, and #lobes (which are not bent), but is it a #hybrid? And is the faint, apparently isolated, radio source to the SW associated (it shows up clearly in NVSS)? If so, is this a highly #asymmetric #restarted source? Both FIRST and NVSS cutouts centered on the host,

    and,

    ARG0003bcu - could be a HyMoR candidate but it's hard to say since the hot spot may also be a background source.

    Here's the First cutout, which seems to show the #diffuse emission further to the WSW,

    enter image description here

    and which is also visible here in the NVSS cutout.

    enter image description here

    The lobe to the WSW is very #diffuse, and is centred on SDSS J084547.08+070330.9, which does have First radio emission, and has an NVSS reference in NED. There's an ALLWISE reference also, ALLWISE J084547.06+070331.4.

    SDSS J084547.08+070330.9

    enter image description here

    Regarding the possible radio morphology of the emissions from ARG0003bcu, it does seem to be more a #core with #lobes, possibly a #hybrid, with the lobe, emission to the WSW probably not related. And looking at the ARG image left, it looks like there could be an #overlap of the core centre lobe with a background source.

    Any views, comments, welcome.

    Posted