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Summary
DescriptionGalaxy JADES-GS-z6 in the GOODS-S field- JADES (NIRCam image) (53057957393).jpg |
English: This image highlights the location of the galaxy JADES-GS-z6 in a portion of an area of the sky known as GOODS-South, which was observed as part of the JWST Advanced Deep Extragalactic Survey, or JADES.
More + high resolution image: www.esa.int/Science_Exploration/Space_Science/Webb/Webb_s... This galaxy, along with others in this region, were part of a Webb study by an international team of astronomers, who observed the chemical signature of carbon-rich dust grains at redshift ~7. This is roughly equivalent to one billion years after the birth of the Universe. Similar observational signatures have been observed in the much more recent Universe, attributed to complex, carbon-based molecules known as polycyclic aromatic hydrocarbons (PAHs). It is not thought likely, however, that PAHs would have developed within the first billion years of cosmic time. Therefore, this observation suggests the exciting possibility that Webb may have observed a different species of carbon-based molecule: possibly minuscule graphite- or diamond-like grains produced by the earliest stars or supernovae. This observation suggests exciting avenues of investigation into both the production of cosmic dust and the earliest stellar populations in our Universe, and was made possible by Webb’s unprecedented sensitivity. The team’s research indicates that this particular galaxy showed significant dust obscuration and has undergone substantial metal enrichment relative to galaxies with similar mass at the same redshift. The team also believes the galaxy's visible colour gradient may indicate a peculiar geometrical alignment of stars and dust. In this image, blue, green, and red were assigned to Webb’s NIRCam (Near-Infrared Camera) data at 0.9, 1.15, and 1.5 microns; 2.0, 2.77, and 3.55 microns; and 3.56, 4.1, and 4.44 microns (F090W, F115W, and F150W; F200W, F277W, and F335M; and F356W, F410M, and F444W), respectively. The galaxy is shown zoomed in on a region measuring roughly 1x1 arcseconds, which is a measure of angular distance on the sky. One arcsecond is equal to 1/3600 of one degree of arc (the full Moon has an angular diameter of about 0.5 degrees). The actual size of an object that covers one arcsecond on the sky depends on its distance from the telescope. Image credit: ESA/Webb, NASA, ESA, CSA, B. Robertson (UC Santa Cruz), B. Johnson (Center for Astrophysics, Harvard & Smithsonian), S. Tacchella (University of Cambridge, M. Rieke (Univ. of Arizona), D. Eisenstein (Center for Astrophysics, Harvard & Smithsonian), A. Pagan (STScI) [Image description: The image shows a deep galaxy field, featuring thousands of galaxies of various shapes and sizes. A cutout indicates a particular galaxy, known as JADES-GS-z6, which was a research target for this result. It appears as a blurry smudge of blue, red and green.] |
Date | Taken on 19 July 2023, 14:11:01 |
Source | Galaxy JADES-GS-z6 in the GOODS-S field: JADES (NIRCam image) |
Author | James Webb Space Telescope |
Flickr set InfoField | Webb Images/Science 2023 |
Flickr tags InfoField | galaxies; webb; jwst |
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This image was originally posted to Flickr by James Webb Space Telescope at https://flickr.com/photos/50785054@N03/53057957393. It was reviewed on 23 July 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
23 July 2023
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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1,685 pixel
2,220 pixel
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19 July 2023
19 July 2023
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current | 17:35, 23 July 2023 | ![]() | 2,220 × 1,685 (500 KB) | OptimusPrimeBot | #Spacemedia - Upload of https://live.staticflickr.com/65535/53057957393_d78b56085f_o.jpg via Commons:Spacemedia |