File:Hubble Interacting Galaxy Arp 220 (2008-04-24).jpg
Original file (3,372 × 3,372 pixels, file size: 7.02 MB, MIME type: image/jpeg)
Captions
DescriptionHubble Interacting Galaxy Arp 220 (2008-04-24).jpg |
Arp 220 appears to be a single, odd-looking galaxy, but is in fact a nearby example of the aftermath of a collision between two spiral galaxies. It is the brightest of the three galactic mergers closest to Earth, about 250 million light-years away in the constellation of Serpens, the Serpent. The collision, which began about 700 million years ago, has sparked a cracking burst of star formation, resulting in about 200 huge star clusters in a packed, dusty region about 5,000 light-years across (about 5 percent of the Milky Way's diameter). The amount of gas in this tiny region equals the amount of gas in the entire Milky Way Galaxy. The star clusters are the bluish-white bright knots visible in the Hubble image. Arp 220 glows brightest in infrared light and is an ultra-luminous infrared galaxy. Previous Hubble observations, taken in the infrared at a wavelength that looks through the dust, have uncovered the cores of the parent galaxies 1,200 light-years apart. Observations with NASA s Chandra X-ray Observatory have also revealed X-rays coming from both cores, indicating the presence of two supermassive black holes. Arp 220 is the 220th galaxy in Arp's Atlas of Peculiar Galaxies. This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.
|
||||||||||||||||||||||||
Date | |||||||||||||||||||||||||
Source | http://hubblesite.org/newscenter/archive/releases/2008/16/image/aq/ (direct link) | ||||||||||||||||||||||||
Author | NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) | ||||||||||||||||||||||||
Permission (Reusing this file) |
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 15:54, 25 April 2008 | 3,372 × 3,372 (7.02 MB) | とある白い猫 (talk | contribs) | {{Information |Description=Arp 220 appears to be a single, odd-looking galaxy, but is in fact a nearby example of the aftermath of a collision between two spiral galaxies. It is the brightest of the three galactic mergers closest to Earth, about 250 milli |
You cannot overwrite this file.
File usage on Commons
The following 3 pages use this file:
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on en.wikiversity.org
- Usage on fr.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on nl.wikipedia.org
- Usage on nn.wikipedia.org
- Usage on no.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on sr.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.
_error | 0 |
---|