File:Center of galaxy NGC 5643.tif
Original file (804 × 484 pixels, file size: 2.26 MB, MIME type: image/tiff)
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Summary
[edit]DescriptionCenter of galaxy NGC 5643.tif |
English: This ESO Picture of the Week shows the centre of a galaxy named NGC 5643. This galaxy is located 55 million light-years from Earth in the constellation of Lupus (The Wolf), and is known as a Seyfert galaxy. Seyfert galaxies have very luminous centres — thought to be powered by material being accreted onto a supermassive black hole lurking within — that can also be shrouded and obscured by clouds of dust and intergalactic material.
As a result, it can be difficult to observe the active centre of a Seyfert galaxy. NGC 5643 poses a further challenge; it is viewed at a high inclination, making it even trickier to view its inner workings. However, scientists have used the Atacama Large Millimeter/submillimeter Array (ALMA) together with archival data from the Multi Unit Spectroscopic Explorer (MUSE) instrument on ESO’s Very Large Telescope to reveal this view of NGC 5643 — complete with energetic outflowing ionised gas pouring out into space. These impressive outflows stretch out on either side of the galaxy, and are caused by matter being ejected from the accretion disc of the supermassive black hole at NGC 5643’s core. Combined, the ALMA and VLT data show the galaxy’s central region to have two distinct components: a spiraling, rotating disc (visible in red) consisting of cold molecular gas traced by carbon monoxide, and the outflowing gas, traced by ionised oxygen and hydrogen (in blue-orange hues) perpendicular to the inner nuclear disc. |
Date | |
Source | https://www.eso.org/public/images/potw1822a/ |
Author | ESO/A. Alonso-Herrero et al.; ALMA (ESO/NAOJ/NRAO) |
Licensing
[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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:03, 28 May 2018 | 804 × 484 (2.26 MB) | Jmencisom (talk | contribs) | User created page with UploadWizard |
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Width | 804 px |
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Height | 484 px |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 23,386 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 484 |
Bytes per compressed strip | 2,334,816 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2018 (Windows) |
File change date and time | 15:22, 24 May 2018 |
Color space | Uncalibrated |