File:NASA-PeekabooGalaxy-20221206.png
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Summary[edit]
DescriptionNASA-PeekabooGalaxy-20221206.png |
English: PULL-OUT: "PEEKABOO" DWARF GALAXY HIPASS J1131–31
Released - December 6, 2022 https://hubblesite.org/contents/media/images/2022/051/01GJE0180H4JFXQ3BXFYC6RP7E A large bright star is centered, with four long rays extending in an X shape. Close on the star's right is a small blue peanut-shaped galaxy surrounded by a white square graphic, which leads right to a larger square showing a zoomed-in view of the galaxy. NASA's Hubble Space Telescope captured a detailed image of the tiny galaxy HIPASS J1131–31, nicknamed the "Peekaboo Galaxy," despite its proximity to a bright foreground star. In addition to Hubble imagery, astronomers used the South African Large Telescope (SALT) to collect detailed spectroscopic data on the galaxy's stars, which show it to be one of the least chemically enriched galaxies ever discovered in the local universe. Typically, generations of stars produce more—and more complex—chemical elements (which astronomers call "metals") over cosmic time. At the dawn of the universe, 13.8 billion years ago, hydrogen and helium were the only abundant elements. Early galaxies that were made up of some of the first generations of stars had not had time to build up much chemical complexity. Evolved galaxies like our own Milky Way have stars that are many billions of years old and are metal-rich, including all the elements that make life on Earth possible. The stars of the Peekaboo Galaxy, however, appear to be only a few billion years old at most. Why, and how, the Peekaboo Galaxy delayed star-formation for so many billions of years is a question that astronomers will continue to investigate. |
Date | |
Source | https://stsci-opo.org/STScI-01GJE0A0GF3JME9YEH473HB2ZA.png |
Author |
Science: NASA, ESA, Igor Karachentsev (SAO RAS) Image Processing: Alyssa Pagan (STScI) |
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Public domainPublic domainfalsefalse |
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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:53, 18 December 2022 | 2,604 × 1,592 (6.09 MB) | Drbogdan (talk | contribs) | crop version - seems better | |
14:44, 18 December 2022 | 3,590 × 2,191 (10.75 MB) | Drbogdan (talk | contribs) | Uploaded a work by Science: NASA, ESA, Igor Karachentsev (SAO RAS) Image Processing: Alyssa Pagan (STScI) from https://stsci-opo.org/STScI-01GJE0A0GF3JME9YEH473HB2ZA.png with UploadWizard |
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File change date and time | 14:52, 18 December 2022 |
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Horizontal resolution | 118 dpc |
Vertical resolution | 118 dpc |