Harassed galaxies blush
Article Abstract:
Galaxy harassments are repeated high speed encounters among cluster galaxies, changing the evolutionary transformations of the interacting galaxies. The encounters take place because the densities of the galaxies are higher than that in the field, and the galaxies have fixed orbits around the gravitational potential of the cluster. Numerical simulations show that the structure of the Butcher-Oelmer cluster is similar to that of harassed galaxies. Since the simulations presume that the galaxies are rigid potential wells, the simulations might be incorrect for the Butcher-Oelmer cluster.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Meet your cosmic neighbour
Article Abstract:
The cluster of galaxies Abell 3627 lies close to the Milky Way, and because it is obscured by the Milky Way, does not receive much attention.The cluster is comparable in mass with neighbouring clusters such as Coma and Perseus. Emission studies reveal that Abell 3627 is the sixth brightest X-ray flux of all the known clusters. Abell 3627 exists in the neighboring Universe called the Great Attractor, which contributes substantially to the gravitational pull on the Milky Way. The mass of Abell 3627 is about 10% of the total mass of the Great Attractor.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Clumpy star-forming regions as the origin of the peculiar morphology of high-redshift galaxies
Article Abstract:
Theoretical astronomy research has established that young high-redshift galaxies have gas-rich disks which fragment into sub-galactic clumps that go on to form stars. The galaxies eventually develop a form with an exponential disk and a spheroidal bulge. The proposed model describes astronomy patterns in both high and low redshift galaxies.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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