Radio Galaxy Zoo Talk

ARG0003147, complex ARG field, SDRAGN candidate?

  • ChrisMolloy by ChrisMolloy

    Here's ARG0003147. This ARG field contains a multitude of emissions, extending #overedge to the south. I've included the #overedge emissions to the south, which are partly #diffuse in the ARG image left, but more visible below. This contour overlay image is centred on SDSS J135947.35+103318.4, to assist this.

    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, Wise band 1 lime green.

    The #diffuse emission at the top of the ARG contour overlay image appears to have a semblance of a #doubllobe, or #hourglass. There is a radio reference in NED for SDSS J135948.21+103407.6, which is a very faint galaxy and has a SDSS DR9 z_ph=0.693 +/-0.155. This object is in the centre of the lobes.

    SDSS J135948.21+103407.6

    enter image description here

    There is an ALLWISE reference, ALLWISE J135949.45+103350.4, and strong ir source centred on SDSS J135949.42+103350.2. This object is listed as a star, and is at the SE edge of these lobes. Whether this is the host of the emission is hard to discern.

    SDSS J135949.42+103350.2

    enter image description here

    The emission in the centre of the contour overlay image above, could feasibly be a #one-sided #doublelobe, extending to the SE. The host appears to be SDSS J135947.35+103318.4, a possible #disk like galaxy, with a z_sp=0.283 +/-0.00002. This object has recorded First flux emission, is listed as a #QSO, and is partly #green. There doesn't appear to be any radio references in NED for this galaxy, but this object is cited as a radio source in SIMBAD, has an ALLWISE reference, ALLWISE J135947.35+103318.5, with a strong ir contour in Wise Band 1, and is visible in the ARG image left. There isn't an ALLWISE or ir signal which appears to be positioned in the centre of the SE First lobe.

    SDSS J135947.35+103318.4

    enter image description here

    With regards to the SE lobe, there is a radio reference in NED for SDSS J135948.65+103252.3, which is listed as a star in SDSS DR14. This object is positioned near the south west edge of the lobe, has a possible radio reference in SIMBAD, and there is an ALLWISE reference slightly SE of this object, ALLWISE J135948.73+103251.2, with a #diffuse Wise Band 1 contour. And slightly west north west of SDSS J135948.65+103252.3, there is an ALLWISE reference for ALLWISE J135947.80+103255.2. The latter reference, appears to have a corresponding Wise Band 1 contour and is visible in the ARG image left.

    SDSS J135948.65+103252.3

    enter image description here

    SW of SDSS J135948.65+103252.3, there is a relatively large #diffuse First emission. This lobe extends #overedge of the ARG image left. There doesn't appear to be any photometric object located at this position, nor any ALLWISE references.

    And further SE of this emission there is a #compact lobe which is centred on SDSS J135949.34+103201.1, which has a z_sp=0.637 +/- 0.00029. This object has recorded First flux emission, but no radio references in NED or SIMBAD. However it does have an ALLWISE reference, ALLWISE J135949.33+103202.9, and a corresponding Wise Band 1 contour. There is always the possibility that the above #diffuse First emission NW of SDSS J135949.34+103201.1 is related to this object, but this is hard to discern.

    SDSS J135949.34+103201.1

    enter image description here

    Regarding whether SDSS J135947.35+103318.4 is a #disk galaxy and possibly an #SDRAGN candidate, it has a fracDev_g, _r, of 0.551, and 0.849; and an expAB_g of 0.534 and expAB_r of 0.503 respectively. For c, the inverse concentration index, it has a figure of 0.444 for the g band and 0.403 for the r band. On the above parameters, it does look promising, if the lobe to the SE is related to this host.

    Enlarged image SDSS J135947.35+103318.4

    enter image description here

    Finally, there is always the possibility that the emission to the SE of SDSS J135947.35+103318.4 is an #overlap. This is more visibly clearer in the First cut-out below, where there seems to be strong and #diffuse emissions. Thus, SDSS J135948.65+103252.3 could be the host of #diffuse emissions N and SW of its location, possibly being the host of a #doublelobe, or even maybe a #triple, with the #diffuse emission further N.

    enter image description here

    As always, comments, suggestions, welcome.

    Posted

  • JeanTate by JeanTate

    A quite complicated field!

    SDSS J135947.35+103318.4 is certainly a host, but whether the radio emission to the SE is a lobe (of this host) is hard to say. It is very likely not a boring elliptical, though the green may be an artifact.

    SDSS J135949.34+103201.1 seems to be the BCG (brightest cluster galaxy) of a distant, rich galaxy cluster; if so it - or one of its neighbors - is very likely a host. It may also be the source of the diffuse emission, if it's real (unfortunately, the NVSS image isn't much help, though maybe a contour overlay including it might help).

    Posted

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

    Here's an NVSS contour with First. Doesn't add much.

    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, NVSS cyan.

    Posted