File:An unlikely spiral (potw2411a).tiff
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Size of this JPG preview of this TIF file: 743 × 600 pixels. Other resolutions: 297 × 240 pixels | 595 × 480 pixels | 952 × 768 pixels | 1,269 × 1,024 pixels | 2,537 × 2,048 pixels | 3,879 × 3,131 pixels.
Original file (3,879 × 3,131 pixels, file size: 69.53 MB, MIME type: image/tiff)
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DescriptionAn unlikely spiral (potw2411a).tiff |
English: This image shows LEDA 42160, a galaxy about 52 million light-years from Earth in the constellation Virgo. The dwarf galaxy is one of many forcing its way through the comparatively dense gas in the Virgo cluster, a massive cluster of galaxies. The pressure exerted by this intergalactic gas, known as ram pressure, has dramatic effects on star formation in LEDA 42160, which are presently being studied using the Hubble Space Telescope.LEDA 42160 falls into the category of ‘Magellanic spiral galaxy’, or type Sm for short, under the de Vaucouleurs galaxy classification system. Magellanic spiral galaxies can be further sub-categorised as barred (SBm), unbarred (SAm) and weakly barred (SABm), where a ‘bar’ is an elongated bar-shape at a galaxy’s core. Generally speaking, Magellanic spiral galaxies are dwarf galaxies with only one single spiral arm. They are named after their prototype, the Large Magellanic Cloud, which is an SBm galaxy. Magellanic spiral galaxies are an interesting example of how galaxy categorisation is actually more nuanced than simply ‘spiral’, ‘elliptical’ or ‘irregular’. [Image Description: A distorted dwarf galaxy, obscured by dust and by bright outbursts caused by star formation, floats roughly in the centre. A few distant galaxies are visible in the background around it, many as little spirals, and also including a prominent elliptical galaxy. A bright star hangs above the galaxy in the foreground, marked by cross-shaped diffraction spikes.] |
Date | 11 March 2024 (upload date) |
Source | An unlikely spiral |
Author | ESA/Hubble & NASA, M. Sun |
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ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: ESA/Hubble
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:47, 14 March 2024 | 3,879 × 3,131 (69.53 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://esahubble.org/media/archives/images/original/potw2411a.tif via Commons:Spacemedia |
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Width | 3,879 px |
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Height | 3,131 px |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 33,576 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 3,131 |
Bytes per compressed strip | 72,870,894 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 25.3 (Windows) |
File change date and time | 14:37, 22 February 2024 |
Color space | Uncalibrated |