Galaxy Omega Centauri

Galaxy Omega Centauri

Omega Centauri or NGC 5139 is a globular cluster in the constellation Centaurus. Discovered by Edmond Halley in 1677. Omega Centauri was included in the catalog of Ptolemy 2000 years ago as a star. Lacaille included it in its catalog number as I. The English astronomer William Herschel John was first recognized as a globular cluster in 1830. This cluster orbits our galaxy, the Milky Way, the largest and brightest of the globular clusters that orbit. It is one of the few that can be seen with the naked eye. Omega Centauri is about 15,800 light years (4.85 kpc) from Earth and contains several million stars of Population II. The stars of the center are so interligads between them that believed were only 0.1 light years apart. Its estimated age is about 12 billion years.
Although not a star in the constellation, a designation received from Bayer, ω. One feature that distinguishes it from other globular clusters in our galaxy contains stars of different generations. Therefore, it is speculated that Omega Centauri may be the remnant core of a dwarf galaxy that was satellite of our Milky Way. This galaxy would have a size hundreds of times higher than the current Omega Centauri and was fragmented and absorbed by our galaxy. The chemistry and dynamics of Omega Centauri is consistent with this hypothesis.

Galaxy Omega Centauri Originally published in Shvoong:

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