Radio Galaxy Zoo Talk

ARG0000b7g: host(s)?

  • JeanTate by JeanTate

    Quite a mess! 😮

    enter image description here

    That z_sp 0.061 SDSS J113908.57+553952.1 is a host is clear, and that it has both core radio emission and some very odd-looking lobes also:

    enter image description here

    But is the nice spiral also a host?

    enter image description here

    Is there, perhaps, a background #bent #triple behind its disc (disk)?

    Perhaps a zoomed-in, less noisy, overlay may help?

    The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J113912.22+553957.5

    Posted

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

    Perhaps a zoomed-in, less noisy, overlay may help?

    Two versions, with different contour spacings:

    enter image description here
    enter image description here

    SDSS J113908.57+553952.1, the elliptical, is clearly a #triple, and the inner structure is relatively normal.

    SDSS J113912.22+553957.5, the spiral, is perhaps more interesting: on the one hand, you could say the radio emission is just that from star-forming regions; on the other hand, it's strangely concentrated and the morphology is very much like that of a #wat! 😮 Perhaps there's a distant AGN, far in the background, invisible in the SDSS image?

    What do you think?

    The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J113911.20+554007.0

    Posted

  • sisifolibre by sisifolibre

    Thanks Jean for your great overlays and for be in constant feedback.
    I think that the host of central radio morphology is a distant AGN hidden by the spiral, But now I understand that any case all we can say in cases like this is very speculative, because what we see isn't sufficient data.

    Posted