Space Warps Talk

Large, faint blue arcs

  • ElisabethB by ElisabethB moderator

    There are a couple of faint blue arcs in the top left corner.

    Is this a known lens candidate ?


  • Capella05 by Capella05 moderator

    I am still learning how to work tools - but it looks good. The alignment is a bit strange - is that because it is a cluster, or is more than one galaxy being lensed?


    g band

    There may also be some , more arcs further out - exciting! Can't wait for a Scientist to give their opinion.


  • ElisabethB by ElisabethB moderator

    Ooh nice ! Tx.

    Yes, I also see some arcs further out. The cluster explanation looks plausible.


  • Tom_Collett by Tom_Collett scientist

    That could well be lensing. It's a bit too faint to really be sure. I'd like to see a bigger field to confirm that this is a cluster, but the fact that there are lots of similar colour galaxies implies that it is a cluster.

    Clusters are almost always lenses, because they are so massive. But, cluster lenses are really hard to model because there are so many clumps of matter (galaxies) in them.