File:Pull-out- "Peekaboo" Dwarf Galaxy HIPASS J1131–31 (2022-051).tiff
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[edit]DescriptionPull-out- "Peekaboo" Dwarf Galaxy HIPASS J1131–31 (2022-051).tiff |
English: 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 | 6 December 2022 (upload date) |
Source | Pull-out: "Peekaboo" Dwarf Galaxy HIPASS J1131–31 |
Author | SCIENCE: NASA, ESA, Igor Karachentsev (SAO RAS) IMAGE PROCESSING: Alyssa Pagan (STScI) |
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[edit]Public domainPublic domainfalsefalse |
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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current | 22:02, 28 June 2023 | 3,590 × 2,191 (10 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://stsci-opo.org/STScI-01GJE09QNKHGTP2F2MP9K39G5X.tif via Commons:Spacemedia |
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Author | Space Telescope Science Institute Office of Public Outreach |
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Copyright holder | Public |
Width | 3,590 px |
Height | 2,191 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 24 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 23.5 (Macintosh) |
File change date and time | 15:40, 21 November 2022 |
Exif version | 2.31 |
Date and time of digitizing | 10:39, 27 October 2022 |
Color space | Uncalibrated |