Radio Galaxy Zoo Talk

ARG0002drv, overlap of two lobes?

  • ChrisMolloy by ChrisMolloy

    Here's ARG0002drv, a very #unusual emission, which could possibly be an #overlap of two radio lobes.

    ![enter image description here](

    The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
    First in red, Wise band 1 lime green.

    A possible host for the east emission is SDSS J100814.73+193456.8, which has a z_sp=0.196 +/-0.00004. This galaxy has radio references in NED and SIMBAD, recorded First flux emission, and an ALLWISE reference, either ALLWISE J100814.86+193454.8 or J100814.65+193458.7.

    SDSS J100814.73+193456.8

    enter image description here

    If this is an #overlap, then a possible host for the west lobe could be SDSS J100812.95+193450.8, which has a z_ph=0.241 ± 0.0544. This object has an ALLWISE reference, ALLWISE J100813.00+193451.3. There doesn't appear to be any radio references in NED or SIMBAD for this object.

    SDSS J100812.95+193450.8

    enter image description here

    There are a couple of radio references in SIMBAD for sources that appear to be in the middle of this emission. However, there doesn't appear to be SDSS objects listed at these locations. Although, as per the ARG comments left, this could be a #halo or #relic from a distant source. There is an object slightly north of the centre of this emission, but this doesn't appear to have a reference in SDSS. In terms of this being an #overlap of two emissions, there are ir sources at both of the locations of SDSS J100814.73+193456.8
    and SDSS J100812.95+193450.8. And finally, there is always the possibility that SDSS J100814.73+193456.8 is the only host for these lobes, and this is a #one-sided emission.

    As always, comments, suggestions, welcome.


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

    Cool! 😃

    I think the contour overlay makes much clearer what you might suspect from the ARG: that this is nice #NAT.

    However, the host is a bit uncertain; SDSS J100814.73+193456.8 is the more plausible, but I thing the galaxy to its NW (zsp 0.198 SDSS J100814.58+193500.1) may (also) be (a) host.