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by | Jul 12, 2022 | | 0 comments

from webbtelescope.org: Infographic titled “Galaxy Cluster SMACS 0723, Webb Spectra Confirm Two Arcs Are the Same Galaxy; NIRISS Imaging, NIRIS Grism, and NIRISS Wide Field Slitless Spectroscopy.” At far left is a large NIRISS image, with two long, arced galaxies toward the center. In the middle is a NIRISS Grism image that shows the light of every object in this segment of the galaxy field, spread out horizontally. The right side shows two line graphs. The brightnesses at each wavelength of the two long, arced galaxies are plotted in two line graphs. The graphs show that the peaks for hydrogen and oxygen occur at the same wavelengths for both galaxies.

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