type of source and host galaxy?

• by WizardHowl

  I'm not sure how to tag this spectacular source; I think the hourglassPlume is closest. The host galaxy is another oddity: the best-positioned source is SDSS J152404.92+542805.3 Z_ph~0.2 which has a strong yellow core but blue-ish surroundings as if it were a disk galaxy viewed at an Andromeda-like angle. Its closest neighbour (SDSS J152405.73+542814.4) also has a disk-like appearance but is much closer with Z_ph~0.06. From the angle of inclination, SDSS J152404.92+542805.3 is also the better match of the two for jets emerging at right angles to its galactic plane. It is hard to be sure from the image but there is a hint of distortion in the shape of both galaxies.

  Simbad shows 3C 319.0 as coincident with the second disk-like galaxy, SDSS J152405.73+542814.4. NED remarks that it is identified with SDSS J152404.92+542805.3 in 2009A&A...495.1033B. This paper is interested in spectroscopy of the sources and does not comment on the morphology/nature of this galaxy, however.

  Posted May 28, 2014 8:03 PM

• by JeanTate

  From the Suggestions for RGZ Objects to show with detailed FIRST contours overlaid on SDSS images thread, started by WizardHowl:

  http://radiotalk.galaxyzoo.org/#/subjects/ARG0000d99 hourglassplume, which is the host galaxy?

  

  Is the host SDSS J152405.73+542814.4 (left, z_ph 0.068 ± 0.0281/0.063 ± 0.0218), or SDSS J152408.66+542838.1 (right; z_ph 0.161 ± 0.0173/0.166 ± 0.0297), or something else?

  

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

  Posted July 8, 2014 1:32 AM

• by 42jkb scientist, admin

  I would say that the host galaxy is the smaller one of the two (above two thumbnails - the one on the right). Although higher resolution radio data would be needed to verify that the AGN jets do originate from this galaxy.

  Posted July 9, 2014 1:29 AM

• by JeanTate

  Two different contour overlays:

  

  

  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. Top image center (J2000.0) is the galaxy SDSS J152404.92+542805.3; "z_ph" its SDSS photometric redshift; bottom image center (J2000.0) is the galaxy SDSS J152408.66+542838.1; "z_ph" its SDSS photometric redshift.

  Posted September 14, 2014 2:26 AM