Galaxy Zoo Talk

star or galaxy?

  • metalmania by metalmania

    this one is an unusual orange colour...is that not a star?

    Posted

  • 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.

    http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=318.00490023489056&dec=-0.9170236712343879

    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.

    Posted