ARG0003o4w - complicated emission, even more so in NVSS, possibly Xshaped?
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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?
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):
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?
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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! 😃
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