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File:Galactic refurbishment.jpg

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Summary

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English: The smudge of stars at the centre of this NASA/ESA Hubble Space Telescope image is a galaxy known as UGC 5797. UGC 5797 is an emission line galaxy, meaning that it is currently undergoing active star formation. The result is a stellar population that is constantly being refurbished as massive bright blue stars form. Galaxies with prolific star formation are not only veiled in a blue tint, but are key to the continuation of a stellar cycle. In this image UGC 5797 appears in front of a background of spiral galaxies. Spiral galaxies have copious amounts of dust and gas — the main ingredient for stars — and therefore often also belong to the class of emission line galaxies. Spiral galaxies have disc-like shapes that drastically vary in appearance depending on the angle at which they are observed. The collection of spiral galaxies in this frame exhibits this attribute acutely: Some are viewed face-on, revealing the structure of the spiral arms, while the two in the bottom left are seen edge-on, appearing as plain streaks in the sky. There are many spiral galaxies, with varying colours and at different angles sprinkled across this image — just take a look. A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by Luca Limatola.
Date
Source http://www.spacetelescope.org/images/potw1517a/ (image link)
Author ESA/Hubble & NASA. Acknowledgement: Luca Limatola

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This file is licensed under the Creative Commons Attribution 4.0 International license.
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27 April 2015

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Date/TimeThumbnailDimensionsUserComment
current14:43, 15 December 2019Thumbnail for version as of 14:43, 15 December 20194,008 × 1,960 (4.16 MB)BevinKaconactual size from source
21:43, 29 April 2015Thumbnail for version as of 21:43, 29 April 20154,000 × 1,956 (6.25 MB)HuntsterHigher resolution.
01:58, 28 April 2015Thumbnail for version as of 01:58, 28 April 20151,280 × 626 (169 KB)JmencisomUser created page with UploadWizard

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