Radio Galaxy Zoo Talk

ARG00020sx - NGC 5548, known spiral with radio jet

  • JeanTate by JeanTate

    From a post by c_cld , in the GZF (February 26, 2014):

    Known spiral with radio jet: NGC 5548 , UGC 09149, Mrk 1509 , WISE J141759.55+250812.7
    SDSS J141759.54+250812.7 1237665532785786979 z spec=0.016 [...] The first lobe is at a projected linear size of 54arcsec from the core and the further at 1.7 arcmin, i.e. 17.66kpc and 33.35kpc respectively at redshift 0.0162 😄

    Here's a FIRST contour overlay on an SDSS image, centered on ARG00020sx:

    enter image description here

    The elongated radio source at or near NGC 5548's nucleus may include a jet; are the two radio sources to the W of NGC 5548 associated with it? Or are they (or perhaps one of them) unrelated, produced by a host far in the background?

    <enter image description here>

    Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST (red) contours derived from the FITS file produced using SkyView with Python code described in this RGZ Talk thread. Image center is per the ARG image (left; J2000.0). "z_sp" is an SDSS spectroscopic redshift of NGC 5548.

    Posted

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

    I got ARG00020sx to classify earlier today.

    And I'm at a loss to describe the two radio sources to the W of NGC 5548 ... an unrelated #hourglass (no IR or optical host) and a #lobe (with no obvious counterlobe or host? Or some sort of complex source, again with no IR or optical host?

    Posted