ANOTHER G-lens candidate?
Still trying to finish up my TNO survey (I'm almost through 2006!) and I found an interesting galaxy with yet ANOTHER lens-like formation... Hopefully nobody else has found this yet!
The galaxy (RA=338.55708, dec=5.89394) has a known redshift of 0.68647, which puts it at a good ~9.2 billion light years away, far enough that at that size it's around 2210,000 light years across- just massive enough to cause some slight lensing.
Interestingly, DECaLS cuts off just a few arcseconds away from this, and PANSTARRS shows very little hint, if any, of this:
Here's the raw SDSS images, by the way:
(north is to the right)
Can't find a lens reference for it. Doesn't look like a lens to my untrained eye, a bit too clumpy and irregular?
redshift is from SDSS spectrum and feature seems to be included in the measurement, perhaps someone can extract information concerning lens clues out of it?
It doesn't look the best in the SDSS images, hence why I gave the raw data: it's a perfect fit to a circle drawn with the galaxy at the center.
One of the problems with discerning the "lens" in the spectrum is that the central galaxy is at least a few times brighter than the other object, so it would be quite difficult to detect a secondary object even if it was at a different redshift.
Here is CFHT r-band , if it helps somehow
I don't think it is a lens
by Budgieye moderator
I can't see any UV emission in Aladin lite.Fermi http://aladin.u-strasbg.fr/AladinLite/?
Hmmm, I might expect the porported arc to be brighter, and white-blue like this.