Galaxy Zoo Talk

star or galaxy?

  • metalmania by metalmania

    this one is an unusual orange that not a star?


  • KWillett by KWillett scientist, admin, translator

    Definitely a galaxy, judging by the spectrum and its strong emission lines. It is an unusually round and compact one, though.

    There's a pretty strong auroral line at 5580 A that wasn't removed from the spectrum properly, but other than that the orange color is due probably either to Halpha or OIII emission in one of the DECaLS filters.