2 ms·

Here's a fun little "cluster" I just found: https://viewer.legacysurvey.org/?ra=330.8784&dec=12.6412&layer=ls-dr9&zoom=14 https://viewer.legacysurvey.org/?ra=33

by warent 6y ago

Here's a fun little "cluster" I just found: https://viewer.legacysurvey.org/?ra=330.8784&dec=12.6412&layer=ls-dr9&zoom=14 https://viewer.legacysurvey.org/?ra=330.8784&dec=12.6412&lay... I'm not 100% certain but it seems like this may be an example of severe gravitational lensing, causing the same galaxy to appear as multiple images in different periods of time EDIT: Update link

astro123 6y ago
There's no strong lensing there. If the background galaxies were lensed enough to have multiple images they would also be incredibly distorted. But that does look like a small group/cluster. Edit: Here is an example of strong lensing - see the very curved object just below the bottom bright galaxy https://viewer.legacysurvey.org/?ra=39.9717&dec=-1.5822&layer=ls-dr9&zoom=15 https://viewer.legacysurvey.org/?ra=39.9717&dec=-1.5822&laye... This is https://en.wikipedia.org/wiki/Abell_370 https://en.wikipedia.org/wiki/Abell_370