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by | Jul 12, 2022 | | 0 comments

from webbtelescope.org: An infographic titled “Galaxy Cluster SMACS 0723, Webb Spectra Identify Galaxies in the Very Early Universe; NIRCam Imaging and NIRSpec Microshutter Array Spectroscopy.” The infographic shows the redshift of four distant galaxies. At left is a NIRCam image of the field, which is filled with galaxies of different colors, shapes, and sizes. Four galaxies from this image are highlighted, and labeled: 11.3 billion years, 12.6 billion years, 13.0 billion years, 13.1 billion years to indicate when the observed light was emitted. In inset images, these galaxies appear blurry and have red areas. To the right are four line graphs corresponding to the four highlighted galaxies. These are labeled NIRSpec Microshutter Array Spectroscopy. They show the shift in the position of hydrogen and oxygen emission lines to longer wavelengths as age of the light increases.

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