Indeed, a very interesting report here. From the article, "Our team detected a galaxy, called ID2299, that is ejecting nearly half of its star-forming gas. The galaxy is throwing out the equivalent of 10,000 Suns per year in gas, removing 46% of the total cold gas the galaxy contains. Because the galaxy is also forming stars very rapidly, hundreds of times faster than our Milky Way, the gas that remains will be quickly consumed. At the current rate, ID2299 will shut down in just a few tens of million years. This is much faster than the typical duration of star formation episodes in galaxies, which is a few billion years. "
The paper cited, 'A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4', is a good read.
My observation. ID2299 z = 1.4, the lookback time ~ 9.2E+9 light-years distance from Earth, see
https://ned.ipac.caltech.edu/help/cosmology_calc.html. From the paper, “Table 1 | Properties of the galaxy and the ejected material” contains detailed information. The paper indicates rapid star formation that is stopping or quenched. Note too *a quasi-instantaneous event* with timescale about 3E+6 years for much gas ejection. “This suggests that such an enormous quantity of gas (roughly half of the original galaxy ISM, which is mostly composed of molecular gas at these cosmic epochs18) is being expelled through a quasi-instantaneous event, not accumulating over the Gyr-long timescales of galaxy activity.”
There are other reports of star formation quenching too, e.g. 'Fornax A galaxy investigated with AstroSat',
https://phys.org/news/2021-01-fornax-galaxy-astrosat.html
The modeling of star formation, either Population III stars or others that followed in the BB cosmology, remains a tough subject. 'How nearby galaxies form their stars',
https://phys.org/news/2020-12-nearby-galaxies-stars.html, "Stars are born in dense clouds of molecular hydrogen gas that permeates interstellar space of most galaxies. While the physics of star formation is complex, recent years have seen substantial progress towards understanding how stars form in a galactic environment. What ultimately determines the level of star formation in galaxies, however, remains an open question."
Since Galileo used the telescope in the early 1600s, direct observation of gas forming a new star that then appears in the telescope view, start to finish is not directly observed. Various models are developed based upon many different observations from many different areas in the universe, including the first stars, Population III forming from gas that is not molecular gas clouds but the pristine, primordial gas from BBN. Population III stars remain to be directly observed.
Facebook
Twitter
Instagram