One of the James Webb Space Telescope's principal science goals is to observe the epoch where we think that the first galaxies were created, to understand the details of their formation, evolution, and composition.
. Science papers are now are starting to trickle in, as astronomers are finally starting to collect enough data from JWST to build a deeper understanding of the early Universe.a team of researchers in Denmark believe they have observed some of the very first, earliest galaxies with JWST.One known standard is that the ratio between galaxies and their heavy elements has held constant in the local Universe through the last 12 billion years of history, or about 5/6 of the age of the Universe.
For this study, the astronomers looked at 16 galaxies, some of the earliest galaxies ever observed. Their observations revealed that the chemical abundances in these galaxies are one-fourth of that seen in galaxies that were formed later. Illustration of galaxy formation: Diffuse gas from intergalactic space plummets toward the center, sparking star formation and becoming part of the galaxy's rotating disk. When stars die, they return their gas to the galaxy , now enriched with heavy elements. .The researchers say, however, this result is not entirely surprising. Theoretical models of galaxy formation have predicted this very thing. And now it has been observed.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Webb suggests ancient galaxies were metal-poor and full of gasAstronomers believe the earliest galaxies continuously drew in gas from the vast intergalactic medium.
Consulte Mais informação »
JWST just scanned the skies of potentially habitable exoplanet TRAPPIST-1 bStars at the center of solar systems may have hampered our understanding of far-off atmospheres, but JWST could cut through the interference.
Consulte Mais informação »
JWST discovers massive and compact quiescent galaxyAstronomers have reported the discovery of a new galaxy using the James Webb Space Telescope (JWST) as part of the JWST COSMOS-Web survey. The newfound object, designated JWST-ER1 is a massive and compact quiescent galaxy. The findings were detailed in a paper published September 14 on the pre-print server arXiv.
Consulte Mais informação »
The interaction between AGN and starburst activity as viewed with JWSTWith excellent sensitivity and spatial and spectral resolutions, the James Webb Space Telescope (JWST) presents an unprecedented opportunity to promote our understanding of the evolutionary processes of galaxies.
Consulte Mais informação »
Finally! Astronomers are Starting to See the First Galaxies Coming Together With JWSTOne of the James Webb Space Telescope’s principal science goals is to observe the epoch where we think that the first galaxies were created, to understand the details of their formation, evolution, and composition. With each deep look back in time, the telescope seems to break its own record for the most distant galaxy ever … Continue reading 'Finally! Astronomers are Starting to See the First Galaxies Coming Together With JWST'
Consulte Mais informação »
James Webb Space Telescope sees early galaxies defying 'cosmic rulebook' of star formationRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter sciencef1rst.
Consulte Mais informação »