Galaxies with blue tips

• by karthikeyan.d

  In some images I have seen a few (yellow) galaxies with blue tips, like the one at the top-right of the following image. Are these lenses or something else?

  http://talk.spacewarps.org/#/subjects/ASW00000ri
  

  Posted June 16, 2013 12:57 PM

• by JasonJason

  I think they might be star forming regions in the outer arms of the galaxy, if it were lensing the arcs would be closer to the central bulge on the EdgeOn galaxies which is where the greatest mass would be. Someone with more experience can correct me on this, I am just a novice.

  Posted June 16, 2013 1:03 PM

• by ElisabethB moderator

  Those are indeed spiral galaxies with star formation going on.

  Posted June 16, 2013 1:08 PM