File:Messier 19.jpg
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
![File:Messier 19.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Messier_19.jpg/614px-Messier_19.jpg?20230917181857)
Size of this preview: 614 × 599 pixels. Other resolutions: 246 × 240 pixels | 492 × 480 pixels | 787 × 768 pixels | 1,049 × 1,024 pixels | 1,400 × 1,366 pixels.
Original file (1,400 × 1,366 pixels, file size: 529 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]DescriptionMessier 19.jpg |
English: Messier 19 is a globular cluster in the constellation of Ophiuchus, located about nine degrees above (north) of the galactic plane and slightly west of the line of sight from Earth to the galactic center. It's actually on the opposite side of the galactic center from Earth, so despite being over 28000 light-years from Earth, M19 is one of the Messier globulars closest to the center of the Milky Way, at a little more than 5000 light-years. M19 is moving away from us at a rate of 146 kilometers per second. M19 is a rich, fairly dense globular cluster, and one of the most elongated. The distance along its major axis is around 65 light-years. The brightest stars have an average magnitude of 14.8, and although its total absolute magnitude is -9, the apparent magnitude to us is 6.8. This is bright enough for easy viewing through binoculars and small telescopes. Because of its location near the plane and central region of the Milky Way, it has a background of faint dust and appears embedded in a rich field of stars. As with other globular clusters, which are the oldest, densest, and most populous star clusters in the Milky Way, M19 is made up of stars that are all the same age. These are amongst the oldest stars in our Galaxy, at an age of about 13 billion years. Because the stars in a globular cluster are all the same age and all at the same distance from Earth, they provide an excellent laboratory in which astronomers can study stellar evolution. The stars of a globular cluster can also be used to understand "standard candles", which is to say, types of stars that all have the same intrinsic brightness, and can therefore be used to measure distances. One such type is RR-Lyrae variables, only four of which are observed in M19. This picture was created from six images taken in July 1997 at the KPNO 0.9-meter telescope during the summer Research Experiences for Undergraduates (REU) program operated at the Kitt Peak National Observatory and supported by the National Science Foundation. Image size 15.9x15.5 arc minutes. |
Date | |
Source | https://noirlab.edu/public/es/images/noao-m19/ |
Author | Doug Williams, REU Program / NOIRLAB / NSF / AURA |
Licensing
[edit]![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
![share alike](https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Cc-sa_white.svg/24px-Cc-sa_white.svg.png)
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 18:18, 17 September 2023 | ![]() | 1,400 × 1,366 (529 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/noao-m19.jpg via Commons:Spacemedia |
06:54, 28 October 2020 | ![]() | 700 × 683 (186 KB) | Assambrew (talk | contribs) | Uploaded a work by Doug Williams, REU Program / NOIRLAB / NSF / AURA from https://noirlab.edu/public/es/images/noao-m19/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on hu.wikipedia.org
- Usage on sv.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.
Image title |
|
---|---|
Credit/Provider | Doug Williams, REU Program/NOIRLab/NSF/AURA |
Source | NSF's NOIRLab |
Short title |
|
Usage terms |
|
Date and time of data generation | 21:34, 30 June 2020 |
Keywords |
|
Contact information |
950 North Cherry Ave. Tucson, AZ, 85719 USA |
IIM version | 4 |
Hidden category: