Galaxy Zoo Talk

merger? Old collision?

  • SHLOMI54 by SHLOMI54

    What do you think about this one?
    Is it the result of a previous merger???

    Posted

  • JeanTate by JeanTate in response to SHLOMI54's comment.

    Yes, I'd say that's more likely than any alternative that I can think of right now.

    If it were a bit more regular, it might look like the outer Lindblad resonance which is expected in quiet, slowly evolving disks; like this (source):

    enter image description here

    Posted

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

    Actually a better reference would be the same Buta 2011 that I posted in other thread you started (which ended up having a discussion on lenses) ...

    Posted

  • SHLOMI54 by SHLOMI54

    very interesting, thank you Jean

    Posted