Radio Galaxy Zoo Talk

ARG0000520 - a STARBURST host associated with doublelobes?

  • JeanTate by JeanTate

    Double-double lobes even! 😃 Or a strange cosmic coincidence? 😦

    enter image description here

    The SDSS automated spectroscopic pipeline classes this blue galaxy at the center as a STARBURST; it's certainly not a boring elliptical!

    enter image description here

    <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 the galaxy SDSS J131103.53+595504.0, near the ARG image (ARG0000520; J2000.0). "z_sp" is an SDSS spectroscopic redshift of the galaxy in the center.

    Posted

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

    From this overlay, the rightmost source looks like an hourglass with host SDSS J131053.70+595504.5 Z_ph~0.33-0.34, whilst the rest looks like a triple with an extremely faint core just showing in both radio and optical: SDSS J131101.93+595503.4 Z_ph~0.3-0.56 (large error bars because it is so faint it is barely detected). It would, as is often the case, need more sensitive and higher resolution observations to be sure. The galaxy with the spectrum above has similar Z_ph to the elliptical galaxy immediately adjacent to it, so it might be a merger in its early phases?

    Posted