File:On the hunt for X-rays (potw2418a).jpg
Original file (2,608 × 2,608 pixels, file size: 2.47 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionOn the hunt for X-rays (potw2418a).jpg |
English: Featured in this Hubble Picture of the Week this week is the dwarf galaxy IC 776. This swirling collection of stars new and old is located in the constellation Virgo — in fact, in the Virgo galaxy cluster — 100 million light-years from Earth. While a dwarf galaxy, it's also been classified as an SAB-type or ‘weakly barred’ spiral, one study naming it a “complex case” in morphology. This highly detailed view from Hubble demonstrates that complexity well. IC 776 has a ragged, disturbed disc that nevertheless looks to spiral around the core, and arcs of star-forming regions.This image is from an observation programme dedicated to the study of dwarf galaxies in the Virgo cluster, searching for sources of X-rays in such galaxies. X-rays are often emitted by accretion discs, where material that is drawn into a compact object by gravity crashes together and forms a hot, glowing disc. The compact object can be a white dwarf or neutron star in a binary pair, stealing material from its companion star, or it can be the supermassive black hole at the heart of a galaxy, devouring all around it. Dwarf galaxies like IC 776, travelling through the Virgo cluster, experience a pressure from the intergalactic gas which can both stimulate star formation and feed the central black hole in a galaxy. That can create energetic accretion discs, hot enough to emit X-rays.While Hubble is not able to see X-rays, it can coordinate with X-ray telescopes such as NASA’s Chandra, revealing the sources of this radiation in high resolution using visible light. Dwarf galaxies are thought to be very important for our understanding of cosmology and the evolution of galaxies. As with many areas of astronomy, the ability to examine these galaxies across the electromagnetic spectrum is critical to their study.[Image Description: A spiral galaxy viewed tilted at a diagonal angle. The core and the disc of the galaxy are different colours, but are otherwise difficult to tell apart, with the disc having wispy, ragged edges and many arcs of glowing star-forming patches. A few distant galaxies can be seen in the background around the spiral galaxy, as well as several foreground stars.]Links |
Date | 29 April 2024 (upload date) |
Source | On the hunt for X-rays |
Author | ESA/Hubble & NASA, M. Sun |
Other versions |
|
Licensing
[edit]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.
Conditions:
Notes:
|
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 09:01, 29 April 2024 | 2,608 × 2,608 (2.47 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.esahubble.org/archives/images/large/potw2418a.jpg via Commons:Spacemedia |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
File usage on other wikis
The following other wikis use this file:
- Usage on de.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Source | ESA/Hubble |
---|---|
Credit/Provider | ESA/Hubble & NASA, M. Sun |
Short title |
|
Image title |
|
Usage terms |
|
Date and time of data generation | 06:00, 29 April 2024 |
Software used | Adobe Photoshop 25.6 (Windows) |
File change date and time | 20:16, 22 April 2024 |
Date and time of digitizing | 17:48, 10 December 2023 |
Date metadata was last modified | 22:16, 22 April 2024 |
Unique ID of original document | xmp.did:64011b40-2f75-8d4f-80ee-699b41c97d9f |
Keywords | IC 1776 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |