The Universe Reveals Milky Way's Twin
source: http://www.dailygalaxy.com/my_weblog/2011/03/image-of-the-day-the-universe-reveals-a-twin-of...
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Astronomers concluded that the center of the specatacular spiral galaxy, NGC 253, the largest member of the Sculptor Group of Galaxies, the nearest group to our own Local Group of Galaxies, hosts a twin of Sagittarius A*, the bright radio source that lies at the core of the Milky Way and which we know harbors a massive black hole.
The scientists combined their NACO images with data from the infrared instrument on Chile's Very Large Telescope (VLT), as well as with images from the NASA/ESA Hubble Space Telescope and radio observations made by the Very Large Array and the Very Large Baseline Interferometer. Combining these observations, taken in different wavelengths, provided a clue to the nature of these regions.
The scientists combined their NACO images with data from the infrared instrument on Chile's Very Large Telescope (VLT), as well as with images from the NASA/ESA Hubble Space Telescope and radio observations made by the Very Large Array and the Very Large Baseline Interferometer. Combining these observations, taken in different wavelengths, provided a clue to the nature of these regions.
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