File:S is for Spiral AB is for (Weakly Barred) - potw2342a.jpg
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 611 × 599 pixels. Other resolutions: 245 × 240 pixels | 490 × 480 pixels | 783 × 768 pixels | 1,044 × 1,024 pixels | 1,280 × 1,255 pixels.
Original file (1,280 × 1,255 pixels, file size: 446 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary[edit]
DescriptionS is for Spiral AB is for (Weakly Barred) - potw2342a.jpg |
English: This glittering image shows the spiral galaxy IC 5332, which lies about 30 million light-years away in the constellation Sculptor, and has an almost face-on orientation to Earth. To explain what is meant by‘face-on’, it is helpful to visualise a spiral galaxy as an (extremely) large disc. If the galaxy is oriented so that it appears circular and disc-shaped from our perspective here on Earth, then we can say that it is ‘face-on’. In contrast, if it is oriented so that it appears squashed and oval-shaped, then we would say that it is ‘edge-on’. The key thing is that the same galaxy would look extremely different from our perspective depending on whether it was face-on or edge-on as seen from Earth. Check out these previous Hubble Pictures of the Week for examples of another face-on spiral galaxy and an almost edge-on spiral galaxy. IC 5332 is designated as an SABc-type galaxy in the De Vaucouleurs system of galaxy classification. The ‘S’ is straightforward, identifying it as a spiral galaxy, which it clearly is, given the well-defined arms of bright stars and darker dust that curl outwards from the galaxy’s dense and bright core. The ‘AB’ is a little more complex. It means that the galaxy is weakly barred, which refers to the shape of the galaxy’s centre. The majority of spiral galaxies do not spiral out from a single point, but rather from an elongated bar-type structure. SAB galaxies — which are also known as intermediate spiral galaxies — do not have a clear bar-shape at their core, but also do not spiral out from a single point, instead falling somewhere in between. The lowercase ‘c’ describes how tightly wound the spiral arms are: ‘a’ would indicate very tightly wound, and ‘d’ very loosely wound. Thus, IC 5332 is quite an intermediate spiral galaxy on many fronts: weakly barred, with quite loosely wound arms, and almost completely face-on! [Image Description: A close-in view of a spiral galaxy. It is seen face-on, showing itscircular shape and tightly winding spiral arms. The galaxy glows brightly in the centre and dims to cool colours towards the edge. Dark, faint filaments of dust and brightly glowing, pink and orange bubbles of star formation mark the face of the galaxy.] Links Pan: ‘S’ is for ‘Spiral’, ‘AB’ is for … ‘Weakly Barred’ |
Date | |
Source | https://esahubble.org/images/potw2342a/ |
Author | ESA/Hubble & NASA, R. Chandar, J. Lee and the PHANGS-HST team |
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:
|
This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: ESA/Hubble
- 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 | 02:32, 19 January 2024 | 1,280 × 1,255 (446 KB) | Laensom (talk | contribs) | Uploaded a work by ESA/Hubble & NASA, R. Chandar, J. Lee and the PHANGS-HST team from https://esahubble.org/images/potw2342a/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
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, R. Chandar, J. Lee and the PHANGS-HST team |
Short title |
|
Image title |
|
Usage terms |
|
Date and time of data generation | 06:00, 16 October 2023 |
Software used | Adobe Photoshop 24.4 (Windows) |
File change date and time | 12:45, 28 September 2023 |
Date and time of digitizing | 12:24, 5 August 2022 |
Date metadata was last modified | 14:45, 28 September 2023 |
Unique ID of original document | xmp.did:8f49b035-c93f-7e42-987a-98f1f5e186ab |
Keywords | IC 5332 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |
Structured data
16 October 2023
Hidden category: