What do you think about this one ??...

• by AlexandredOr

  ASW00030q1
  

  The "arc" is rather pretty but the lens is so small and looks like a star.. Must be a quasar......

  Posted May 26, 2013 3:25 PM

• by Budgieye moderator

  The lensing galaxy looks like a galaxy, it is fuzzy looking. It is orange, which means that it is far away, and therefore must be big for us to see us at all. It would be nice if the #green_arc had a counterpart on the other side of the galaxy. A bit far way from the galaxy. Maybe.

  Posted May 26, 2013 5:43 PM

• by DanielM_113

  If this is a lens, the effect is huge. The image is very far from the lensing object. But green is more related to stars and not lensing.

  Posted May 26, 2013 10:45 PM

• by anupreeta scientist, admin in response to DanielM_113's comment.

  For the reasons you mentioned, this is indeed a difficult one to classify. The arc looks right but the lensing galaxy is too puny. I don't even see many other similar reddish galaxies which might hint for the presence of a galaxy group - meaning more massive lens instead of just one tiny red galaxy. As Budgieye said, no sign of counterpart. This could be a case where very thin, distant edge-on galaxies looks very much like an arc.
  One may need higher resolution imaging or spectroscopy to be more certain about what might be going on here. But just going by statistics of which is more likely to happen and absence of other signs of lensing, I'd go with an edge-on galaxy doing a really good job of posing as an arc 😃

  Posted May 27, 2013 1:44 AM

• by AlexandredOr

  Great !
  Thank you Budieye and DanielM_113 for your opinions.
  Thank you Anupreeta for your comment !

  Posted May 27, 2013 9:50 AM

• by AlexandredOr

  Another puzzle, at 3....
  ASW00044nf
  

  Posted June 4, 2013 11:21 AM

• by Budgieye moderator in response to DanielM_113's comment.

  Some oxygen-producing galaxies are green, "green peas", but they are closer to us than orange galaxies, so if a green pes is being lensed, it would have to be by closer galaxies. which are white or yellow. Green quasars are far away and can be lensed, but they don't make arcs.

  Posted June 5, 2013 5:44 AM

• by AlexandredOr

  Thank you Budgieye !

  Posted June 5, 2013 9:52 AM