Radio Galaxy Zoo Talk

ARG00027e5 - invisible host = giant?

  • JeanTate by JeanTate

    SDSS J094558.26+223006.8, z_ph 0.093 ± 0.0170/0.080 ± 0.0190, is not the host. Some object invisible in SDSS surely is; does that mean this is likely a giant, given that the host likely has a redshift > ~0.6?

    enter image description here

    enter image description here

    Or is this, perhaps, two unrelated doublelobes/triples (E NVSS lobe a highly asymmetric doublelobe/triple; W NVSS lobe an hourglass)? Maybe two separate FIRST-only zoom-ins, one on each lobe, might help?

    Generic boilerplate: Background image is either SDSS per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx', or a "Luptonized" image produced from either WISE (3.4μ, 4.6μ, and 12μ bands) or DSS2 (derived from B, R, and IR plates) FITS files obtained from SkyView with Python code described in this RGZ Talk post. FIRST (red) and/or NVSS (cyan) contours are derived from FITS files produced using SkyView with Python code described in this RGZ Talk thread. The image center (J2000.0) is the SDSS galaxy SDSS J094558.26+223006.8; z_sp (z_ph) its spectroscopic (photometric) redshift.

    Posted

  • Dolorous_Edd by Dolorous_Edd

    Host is likely ALLWISE J094554.72+223019.6 or ALLWISE J094555.34+223015.9

    Size is roughly ~2.3'

    Host has to be at z > 0.8 for it to be a giant

    Posted

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

    Thanks! 😃

    Maybe two separate FIRST-only zoom-ins, one on each lobe, might help?

    The E lobe:

    enter image description here

    The W one:

    enter image description here

    Doesn't help much, does it? Higher resolution and/or deeper observations needed ... 😦

    Generic boilerplate: Background image is either SDSS per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, or a "Luptonized" image produced from either WISE (3.4μ, 4.6μ, and 12μ bands) or DSS2 (derived from B, R, and IR plates) FITS files obtained from SkyView with Python code described in this RGZ Talk post. FIRST (red) and/or NVSS (cyan) contours are derived from FITS files produced using SkyView with Python code described in this RGZ Talk thread. The image center (J2000.0) is the SDSS galaxy SDSS J094558.26+223006.8 (top), SDSS J094550.76+223014.8 (bottom); z_sp (z_ph) their spectroscopic (photometric) redshifts.

    Posted