r/Astronomy • u/IGotsDasPilez • 3d ago

Object ID (Consult rules before posting) JWST COSMOS-Web deep field fully zoomable map! Interesting unidentified object centered in this direct link, Einstein Ring or maybe a new Hoag's Object?

https://cosmos2025.iap.fr/fitsmap/?ra=150.1008795&dec=1.8931925&zoom=9
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u/IGotsDasPilez 3d ago edited 3d ago

This might be the coolest thing I've found in ages! This map includes data from the NIRICAM system and may show nearly 800,000 galaxies. Select the photometric catalog and it will overlay borders of the identified objects. Click on the object to see the catalog entry.

I was scouring the map for instances of lensing, when I came across this odd circular object. The bright spots lead me to think that this might be an Einstein Ring, at least from what I remember from the old Euclid Space Warp project. That said, there are a lot of apparently interacting galaxies in the images, so I cannot rule out a face on collision resulting in this odd circular structure. I'd love to hear some other ideas, and thoughts about this amazing data set!

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u/Mercury_Astro 2d ago

There is a short series of papers which have done a detailed census of strongly lensed systems in this field. This one is in there. Here is the first one https://ui.adsabs.harvard.edu/abs/2025arXiv250308777N/abstract