File:Utraviolet Light Source in an Old Galaxy (9464531619).jpg
Original file (1,159 × 1,127 pixels, file size: 1.72 MB, MIME type: image/jpeg)
Captions
Summary[edit]
DescriptionUtraviolet Light Source in an Old Galaxy (9464531619).jpg |
(October 26, 1999) Hubble Space Telescope's exquisite resolution has allowed astronomers to resolve, for the first time, hot blue stars deep inside an elliptical galaxy. The swarm of nearly 8,000 blue stars resembles a blizzard of snowflakes near the core (lower right) of the neighboring galaxy M32, located 2.5 million light-years away in the constellation Andromeda. Hubble confirms that the ultraviolet light comes from a population of extremely hot helium-burning stars at a late stage in their lives. Unlike the Sun, which burns hydrogen into helium, these old stars exhausted their central hydrogen long ago, and now burn helium into heavier elements. The observations, taken in October 1998, were made with the camera mode of the Space Telescope Imaging Spectrograph (STIS) in ultraviolet light. The STIS field of view is only a small portion of the entire galaxy, which is 20 times wider on the sky. For reference, the full moon is 70 times wider than the STIS field-of-view. Thirty years ago, the first ultraviolet observations of elliptical galaxies showed that they were surprisingly bright when viewed in ultraviolet light. Before those pioneering UV observations, old groups of stars were assumed to be relatively cool and thus extremely faint in the ultraviolet. Over the years since the initial discovery of this unexpected ultraviolet light, indirect evidence has accumulated that it originates in a population of old, but hot, helium-burning stars. Now Hubble provides the first direct visual evidence. Image # : PR99-40 |
Date | |
Source | Utraviolet Light Source in an Old Galaxy |
Author | NASA on The Commons |
Permission (Reusing this file) |
NASA on The Commons @ Flickr Commons |
Licensing[edit]
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as: No known copyright restrictionsNo restrictionshttps://www.flickr.com/commons/usage/false
More information can be found at https://flickr.com/commons/usage/. Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information. |
This image was originally posted to Flickr by NASA on The Commons at https://flickr.com/photos/44494372@N05/9464531619. It was reviewed on 27 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions. |
27 September 2015
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:37, 27 September 2015 | 1,159 × 1,127 (1.72 MB) | Sumita Roy Dutta (talk | contribs) | Transferred from Flickr via Flickr2Commons |
You cannot overwrite this file.
File usage on Commons
The following 2 pages use this file:
- File:Hs-1999-40-a-full jpg.jpg (file redirect)
- File:Utraviolet Light Source in an Old Galaxy - GPN-2000-000899.jpg (file redirect)
File usage on other wikis
The following other wikis use this file:
- Usage on af.wikipedia.org
- Usage on ar.wikipedia.org
- Usage on de.wikipedia.org
- Usage on el.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on he.wikipedia.org
- Usage on id.wikipedia.org
- Usage on it.wikipedia.org
- Usage on lb.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on nds.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ro.wikipedia.org
- Usage on si.wikipedia.org
- Usage on uk.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 |
|
---|---|
Author | NASA/ Goddard Space Flight Center - Space Telescope Science Institute |
Date and time of data generation | 00:00, 26 October 1999 |
Credit/Provider | NASA |
Source | NASA |
Online copyright statement | http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html#.Ue6Pwj3piSo |
Short title |
|
Width | 1,159 px |
Height | 1,127 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 150 dpi |
Vertical resolution | 150 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 00:00, 26 October 1999 |
Exif version | 2.21 |
Date and time of digitizing | 00:00, 26 October 1999 |
Color space | sRGB |
Unique ID of original document | B21105BA3104857FB086816D64D90B03 |
Date metadata was last modified | 06:34, 23 July 2013 |
Copyright status | Copyright status not set |
Keywords |
|
IIM version | 4 |