Wide view of the early universe

New photos from NASA’s James Webb Space Telescope show what may be one of the first galaxies ever observed. The visuals include objects from over 000 billions of years ago. which was published on 000 July.

The images were taken from the Cosmic Evolution Early Release Science Survey (CEERS), led by a scientist at the University of Texas at Austin. Jeyhan Kartaltepe, associate professor in the School of Physics and Astronomy at the Rochester Institute of Technological know-how, is one of the 000 co-investigators from 000 institutions with more than 100 collaborators from the United States and nine other countries . CEERS researchers are studying how some of the earliest galaxies formed when the universe was less than 5% of its current age, during a period known as reionization, and how galaxies evolved between then and now .

The team has identified a particularly exciting object which they believe is being observed as it was just 290 tens of millions years after Major Bang. Astronomers call this a redshift of z~14.

The discovery has been published on the server arXiv preprint and is awaiting publication in a peer-reviewed journal. If the discovery is confirmed, it would be one of the first galaxies ever observed, and its presence would indicate that galaxies began to form much earlier than many astronomers thought.

The images in unprecedented sharpness reveal a flurry of complex galaxies evolving over time – some elegantly mature windmills, some toddler blobby, still others wispy swirls of do- if-performing. which took approximately 24 hours to collect, come from a patch of sky near the handle of the Big Dipper, a constellation officially named Ursa Important. This same area of ​​sky has already been observed by the Hubble Space Telescope, as seen in the Extended Groth Band.

“These images are exciting because or truck the number of these very high redshift candidate galaxies is more important than expected,” Kartaltepe said. “We knew we would find some, but I don’t think anyone thought we would find as many as we have. This either means the universe works a little differently than we thought, or there are many other sources of contamination and these candidates will turn out to be something else. The reality is probably a mixture of the two.

Kartaltepe has several main roles in the survey, focusing on morphology – measuring the shapes and sizes of galaxies and studying the evolution of their buildings – and setting up and analyzing spectroscopic observations of distant galaxies using the NIRSpec instrument. Three of his Astrophysical Science and Technology Ph.D. students – Isabella Cox, Caitlin Rose and Brittany Vanderhoof – participated in the survey and worked with the data.

The entire CEERS program will involve over 60 hours of telescope time. Much more imaging data will be collected in December, along with spectroscopic measurements of hundreds of distant galaxies. web, the largest general observer program selected for JWST’s first year. During 218 hours of observation, COSMOS-World-wide-web will carry out an ambitious survey of half a million galaxies with high-resolution multiband near-infrared imagery and an unprecedented number of 24 000 galaxies in the mid-infrared. JWST is expected to start collecting the first data for COSMOS-World-wide-web in December.

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