Radio Galaxy Zoo Talk

ARG00006ms, Wat or doublelobe & compact?

  • ChrisMolloy by ChrisMolloy

    Here's ARG00006ms, which could be three related lobes, possibly a #one-sided #triple, or #Wat, or maybe a #doublelobe and #compact emission.

    enter image description here

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

    The host for the NW lobe appears to be SDSS J153722.64+584154.1, which has a z_ph=0.570 ± 0.0691. This object has radio references in NED and SIMBAD, and recorded First flux emission.

    SDSS J153722.64+584154.1

    enter image description here

    There are radio references in NED for SDSS J153723.95+584141.3, which has a SDSS DR9 z_ph=0.302 +/-0.173. This galaxy is positioned on the southern edge of the centre lobe. Of note, the radio references for this object seem to be the same as those cited for SDSS J153722.64+584154.1. Whether this is the host of any of the emission is hard to ascertain.

    SDSS J153723.95+584141.3

    enter image description here

    The lobe to the SE seems to be related to the central lobes, as there are no separate radio references for this emission, no ir sources located at its physical location. However, there is an ALLWISE reference just north of this object, ALLWISE J153726.47+584131.8, which is positioned on SDSS J153726.47+584131.8. This object is listed as a #star, and doesn't appear to have any radio reference citations.

    SDSS J153726.47+584131.8

    enter image description here

    There is also the possibility that the centre lobe and the lobe to the SE are a #doublelobe, with a hint of possible emission NW, overlapped by the NW lobe. NED has a radio reference for SDSS J153725.19+584135.9, which has a z_ph=0.362 ± 0.1209. This object is positioned in-between the centre and SE lobes.

    SDSS J153725.19+584135.9

    enter image description here

    This ARG field has been imaged in VLASS below. Contours are slightly more spread out and extended from the First image above.

    enter image description here

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

    As always, comments, suggestions, welcome.

    Posted

  • JeanTate by JeanTate

    Nice! 😃

    It's strange that the peak of the VLASS emission is not ~coincident with the apparent host (and peak of the FIRST emission).

    I think this may be a #1-sided #restarted source, or two hosts, with the SE source also a #1-sided with #noIR and #nooptical.

    Posted

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

    It's strange that the peak of the VLASS emission is not ~coincident with the apparent host (and peak of the FIRST emission).

    Just a thought. VLASS is imaged after First by a number of years. Are we looking at the evolution of the emission and the galaxies?

    Posted

  • ChrisMolloy by ChrisMolloy

    Here's an updated VLASS image. There were some additional CD values in the display header of the Fits file which impacted on the positioning of the emissions. Have deleted these.

    enter image description here

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

    Posted

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

    Very nice! 😃

    No doubt as to the host.

    Posted