The cosmic canvas revealed thanks to the James-Webb with a depth never seen!

One of the most important James-Webb missions has just undergone a good step forward thanks to a team of around fifty researchers: they discovered the largest group of galaxies forming the cosmic canvas in a statement from the bottom of the James-Webb sky (named Cosmic-Webb).

Their conclusion is almost revolutionary: the galaxies were structured in clusters and filaments much earlier than previously imagined.

It is called “cosmic canvas“And it is like a huge network of galaxies which weaves the cosmos on a very large scale, the greatest known. Photographing it as a whole is currently impossible because it literally envelops us to the borders of space and time. It is often simulated by super computers, but astronomers manage to photograph parts as is the case in the illustration photo of this article.

The James-Webb space telescope, thanks to its very powerful infrared sensors is precisely the best armed to perceive the distant and lukeworms of the primordial galaxies which practically emit in infrared and almost not in so-called visible light.

The study In addition to the feat of identifying 1678 groups of galaxies, also called “proto clusters”, and which plunge into the universe up to an age of approximately 1.7 billion years (or one Red offset from Z = 3.7).

The universe is structured faster and earlier than expected

In addition to these 1678 groups of galaxies, the team managed to highlight 670 groups (proto cluster) with a purity of 90%, which requires extremely meticulous work in the chosen frequency band. Indeed, the more distant the galaxies are, the more their signal may be polluted, degraded and mixed with surrounding noise (for example with material in preview, like interstellar gas).

The fact that these galaxies of the primitive universe come together and therefore interact so early is essential to understand their internal evolution: their star formation rate will be boosted by successive galactic mergers and they will be enriched, in particular by the contribution of heavy elements synthesized in the heart of the massive stars.

The conclusion of the study talks about itself: “This catalog of groups of galaxies is the largest ultra-profinity group sample built on JWST observations so far and offers a unique opportunity to explore several aspects of the evolution of galaxies in different environments ranging from 12 billion years and study groups themselves, the population of the least rich groups in the formation of the most massive groups.”

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