How to tell the difference between an overlap and a merger

• by remittancegirlgmail.com

  I'd really like to make sure I'm tagging things right, and if there is any tute to help identify the difference between an overlap and a merger, I'd be very grateful if someone would point me to it.

  Posted November 28, 2014 1:19 PM

• by ElisabethB moderator

  Hi remittancegirl,

  Here is the explanation of overlap in the FAQ : http://talk.galaxyzoo.org/#/boards/BGZ0000005/discussions/DGZ0000x8e?page=1&comment_id=5472079927b562063b000050

  I always look for distortions in the galaxies to determine whether it is a merger.No distortions means overlap for me. But sometimes it is not easy to tell whether the galaxies are interacting or not. Just give it your best shot ! 😄

  Posted November 28, 2014 2:02 PM

• by remittancegirlgmail.com

  Thanks for this, Elisabeth!

  Posted November 30, 2014 9:34 AM