Image:Andromeda active core.jpg

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Description

This artist's concept shows a view across a mysterious disk of young, blue stars encircling a supermassive black hole at the core of the neighboring Andromeda Galaxy (M31). The region around the black hole is barely visible at the centre of the disk. The background stars are the typical older, redder population of stars that inhabit the cores of most galaxies. Spectroscopic observations by the Hubble Space Telescope reveal that the blue light consists of more than 400 stars that formed in a burst of activity about 200 million years ago. The stars are tightly packed in a disk that is only a light-year across. Under the black hole's gravitational grip, the stars are traveling very fast: 2.2 million miles an hour (3.6 million kilometers an hour, or 1,000 kilometers a second) Object Names: M31, Andromeda Galaxy, NGC 224.
Source

Hubble Telescope site
Date

September 20, 2005 01:00 PM (EDT)
Author

NASA, ESA and A. Schaller (for STScI)
Permission
( Reusing this image)
Public domain
 This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". ( NASA copyright policy page or JPL Image Use Policy).

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File history

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Date/Time Dimensions User Comment
current 05:26, 7 September 2007 4,800×3,600 (18.59 MB) Alnokta ({{Information |Description=This artist's concept shows a view across a mysterious disk of young, blue stars encircling a supermassive black hole at the core of the neighboring Andromeda Galaxy (M31). The region around the black hole is barely visible at t)
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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Width 5000
Height 3750
Compression scheme 5
Pixel composition RGB
Image title Andromeda Galaxy Double-Nucleus, Painting by Adolf Schaller based on Hubble Space Telescope observations by Tod Lauer, et al.
Orientation Normal
Number of components 3
Horizontal resolution 300 dpi
Vertical resolution 300 dpi
Data arrangement chunky format
Software used Adobe Photoshop CS2 Windows
File change date and time 15:28, 16 September 2005
Author Adolf Schaller
Copyright holder Copyright 2005 by STScI/A.A.Schaller
Colour space sRGB
Retrieved from "http://en.wikipedia.org/wiki/Image:Andromeda_active_core.jpg"
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