Radio Galaxy Zoo Talk

Triple

  • Necronancy1111 by Necronancy1111

    Can somebody explain the indigo lobe between the two radio emission on this triple radio emission lobes.

    Posted

  • WizardHowl by WizardHowl in response to Necronancy1111's comment.

    Welcome to RGZ Necronancy1111 !

    This is another galaxy, unrelated to the radio emission, that happens to be close by on our line-of-sight. Click the SDSS button below the image and you'll see that it is a large disk galaxy seen exactly edge-on. It shows up as an ellipse in the infra-red image because those images have a lower resolution than the optical images in SDSS.

    The infra-red images show much more distant objects than the optical images, which is why RGZ uses them. The disk galaxy has a redshift estimate of about 0.07, whilst the radio source here is a quasar with a redshift just over 1, very much further away, yet about the same brightness in infra-red. Many sources of radio emission have counterparts only in the infra-red but some are in host galaxies so faint or distant that only the radio emission is detected.

    Have fun classifying!

    Posted