File:Glowing Hydrogen Bauble in the Small Magellanic Cloud (iotw2350a).tiff
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DescriptionGlowing Hydrogen Bauble in the Small Magellanic Cloud (iotw2350a).tiff |
English: Orbiting around the Milky Way about 210,000 light-years away is the Small Magellanic Cloud (SMC). This satellite galaxy is a dwarf galaxy, about a twentieth the size of our own galaxy. Sitting among its hundred million stars is a 'bauble' of hydrogen gas, captured here with the 4.1-meter Southern Astrophysical Research (SOAR) Telescope, one of the telescopes at Cerro Tololo Inter-American Observatory (CTIO), operated by NSF’s NOIRLab.This HII (pronounced H two) region is a cloud ripe with star formation. Young, hot, blue stars formed from the material in the molecular cloud, and now emit highly energetic ultraviolet radiation. The photons of the radiation field bombard the remaining hydrogen gas with energy that ionizes the atoms, or, in other words, excites them to a higher energy level. Astronomers use the term HII to refer to this ionized state of the hydrogen. Ionized hydrogen emits light at a specific wavelength called H-alpha. For researchers down on Earth, this wavelength is a unique identity marker for ionized hydrogen, and is responsible for the characteristic red color of HII regions. |
Date | 13 December 2023 (upload date) |
Source | Glowing Hydrogen Bauble in the Small Magellanic Cloud |
Author | CTIO/NOIRLab/SOAR/NSF/AURA Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab) |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 08:01, 14 December 2023 | 1,994 × 2,026 (23.16 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2350a.tif via Commons:Spacemedia |
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Width | 1,994 px |
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Height | 2,026 px |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 43,142 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 2,026 |
Bytes per compressed strip | 24,239,064 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 23.3 (Windows) |
File change date and time | 10:18, 12 December 2023 |
Color space | Uncalibrated |