Radio Galaxy Zoo Talk

ARG0003o4w - complicated emission, even more so in NVSS, possibly Xshaped?

  • JeanTate by JeanTate

    This is a fun one! Restarted #doublelobe? What's the NW-trending NVSS arm? Why isn't the intense FIRST source at the waist of the doublelobe? Why does only the upper NVSS lobe have FIRST sources?

    enter image description here

    The apparent host - the intense FIRST source - is z_ph 0.479 ± 0.1393/0.301 ± 0.1661 SDSS J023832.67+023349.1, which has an obvious AGN, and may also be, morphologically speaking, a not boring elliptical (the green colors of the 'disk' are likely artifacts of the intense AGN; the SDSS colorizing scheme doesn't do these sorts of contrasts well):

    enter image description here

    It's classed as a type 1 Seyfert, and has a z_sp of 0.209±0.001 (Schneider+ 1994*). NED lists some 40 references (and ~20 alternate names). One interesting one is Gezari+ 2007, "Long-Term Profile Variability of Double-peaked Emission Lines in Active Galactic Nuclei" ... this is one of seven such galaxies.

    But perhaps the Seyfert has nothing to do with the butterfly/X-shaped FIRST radio emission?

    <enter image description here>

    Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST (red) and NVSS (cyan) contours derived from FITS files produced using SkyView with Python code described in this RGZ Talk thread. Image center per the ARG image (left; J2000.0).

    *the other two authors? None other than Maarten Schmidt and Jim Gunn! 😃

    Posted