Galaxy Zoo Talk

What is the green ring?

  • Scorch24 by Scorch24

    I learned about Voorwerbs in class recently, but it doesn't look similar to the one that we saw. This one seems perfectly round, like a donut hole. Can anyone explain?

    Posted

  • JeanTate by JeanTate in response to Scorch24's comment.

    It's most likely an artifact, an internal reflection of a bright object within the UKIDSS camera perhaps. It could be from the AGN at the center of the galaxy itself (unlikely though, I think), or of the very bright star off to the left in this SDSS image:

    enter image description here

    Here's an SDSS image showing the AGN fairly clearly (unfortunately, there's no spectrum):

    enter image description here

    Posted

  • tambasel by tambasel

    looks like some strange blackhole or maybe a star or galaxy covered by some object passing infront of it maybe. Who knows

    Posted