Searching for new lensed systems in Cheshire cat

Following the not very well result of geo-z due to high delens source dispersion. I decided to change my approach, I delens relens a lensed image assuming different redshift, typically I try z=1 to 5 with step of 0.5, and see if there's any other lensed image matches its SED in the relens image.

From this approach, I identified 3 additional likely lensed system.

First one is B4,G1,H1 , grouped as source 7.

it has geo-z of 2.28, with delens dispersion of 0.11 arcsec.

SED of three images: Note that B4 is very close to BCG, its contribution is very strong, I use another region to estimate the effect of BCG to lensed image SED and subtract from it.

purple line: SED of B4, uncorrected

Green line: SED of the region used to determine effect from BCG

Red line, SED after subtraction

Second system identified this way is K2 and M1

Geo-z calculated is z=2.03 with delens-dispersion of 0.18 arcsec.

Again, SED of M1 is affected by BCG, consequently, similar technique to above is performed.

Blue line K2

Orange line : uncorrected M1 SED

Green Line : SED of M1_prime , used to determine effect of BCG

Red line : M1 SED after correction of BCG effect.

Third system discovered : Nose and AB

Geo-z result shows 0 dispersion at redshift of 0.93.

SED is similar in both image, Nose is slightly brighter in red, due to its proximity to a cluster member, however I find no good way to determine the effect of its nearby cluster member, I haven't subtract cluster member's effect on SED.