https://phys.org/news/2023-06-webb-telescope-galaxies-early-universe.html, I read this report too and note some items here.
My observations, no pristine gas or metal free gas is seen in the quasar light, Lyman alpha. I also note this in the phys.org report, “What do these galaxies look like? "They are more chaotic than those in the nearby universe," explained Jorryt Matthee, also of ETH Zürich and the lead author of the team's second paper. "Webb shows they were actively forming stars and must have been shooting off many supernovae. They had quite an adventurous youth!" Along the way, Eilers used Webb's data to confirm that the black hole in the quasar at the center of this field is the most massive currently known in the early universe, weighing 10 billion times the mass of the Sun. "We still can't explain how quasars were able to grow so large so early in the history of the universe," she shared.” My note, *more chaotic*, and *shooting off many supernovae* is needed to explain the metals seen in the gas, a SMBH confirmed some 10 billion solar masses, and difficult to explain how quasars formed and grew so large, so early in the BB model for the expanding universe.
Ref - EIGER. I. A Large Sample of [O iii]-emitting Galaxies at 5.3 < z < 6.9 and Direct Evidence for Local Reionization by Galaxies,
https://iopscience.iop.org/article/10.3847/1538-4357/acc588, 12-June-2023.
Ref - EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O iii] Line Emission in Galaxies at z = 5–7 with JWST,
https://iopscience.iop.org/article/10.3847/1538-4357/acc846, 12-June-2023.
Ref - EIGER. III. JWST/NIRCam Observations of the Ultraluminous High-redshift Quasar J0100+2802,
https://iopscience.iop.org/article/10.3847/1538-4357/acd776, 12-June-2023.
My notes. Using cosmology calculators,
https://lambda.gsfc.nasa.gov/toolbox/calculators.html and z=6.9, I get these values for the expanding universe in BB cosmology. Look back distance or light time = 12.936 Gyr or 12.936 billion light years from Earth. Age of universe at z = 0.786 Gyr or < 800 million years old universe after BB event. Comoving radial distance 28.647 Gly from Earth today. Space at the comoving radial distance expands 2.0215222E+00 or a bit more than 2 x c velocity using H0 = 69 km/s/Mpc. Any postulated stellar evolution along the comoving radial distance is not observable from Earth today. The gas seen still contains metals and is not pristine gas from the postulated BBN and before the CMBR is said to evolve or metal free gas that is pristine from the cosmic dark ages after the CMBR is said to form, about 380,000 years after postulated BB event that violates the conservation law of energy.
Facebook
Twitter
Instagram