File:VLT view of binary system R Aquarii from 2012.tif
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Summary
[edit]DescriptionVLT view of binary system R Aquarii from 2012.tif |
English: This image reveals a dramatic binary star system named R Aquarii, located 700 light-years from Earth, as seen in 2012 by ESO’s Very Large Telescope (VLT).
R Aquarii is a so-called “symbiotic binary”, comprising two stars surrounded by a large, dynamic cloud of gas (a nebula). Systems like this contain two stars in an unequal and complex relationship. R Aquarii is made up of one hot white dwarf and one red giant. The red giant is losing matter to its small companion and occasionally ejecting matter in weird spurts, loops and trails, forming the intriguing shapes seen here. There is a lot going on between the performers in this cosmic double act. The red giant is a variable star, with a brightness that changes by a factor of 750 every year and three weeks. The faint nebula is named Cederblad 211 and is thought to be the result of a violent nova 250 years ago. Also visible is a narrow, vertical, S-shaped feature, with blobs of superheated material moving outward at tremendous speeds of 600 to 850 kilometres per second. R Aquarii was also imaged 15 years ago — and several times in the intervening period — to track its ongoing activity. The system is very dynamic and complex, and has expanded and evolved significantly in recent years (an image from 1997 can be seen here, and a comparison between the two is available here). |
Date | |
Source | https://www.eso.org/public/images/potw1850a/ |
Author | ESO |
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[edit]This media was created by the European Southern Observatory (ESO).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts 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 | 08:51, 10 December 2018 | 1,873 × 1,166 (14.06 MB) | Jmencisom (talk | contribs) | User created page with UploadWizard |
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Width | 1,873 px |
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Height | 1,166 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 23 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2019 (Windows) |
File change date and time | 17:37, 5 December 2018 |
Color space | sRGB |
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