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Leo Ring
The Leo Ring is an immense intergalactic cloud of hydrogen and helium gas some in diameter, in orbit of two galaxies, in the center of the Leo Group of galaxies, within the constellation of Leo. ==Observation history== Radio astronomers discovered the cloud in 1983. Astronomers had theorized that the ring was primordial gas in the process of forming a galaxy. The GALEX satellite detected ultraviolet emissions that astronomers at Johns Hopkins University and the Carnegie Institution for Science interpret to indicate star creation in newly forming dwarf galaxies in a 19 February 2009 ''Nature'' paper. 〔 〕 In 2010, it was found that the gas was not primordial, but the result of a galactic collision between the two galaxies the ring is closely associated with.〔 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leo Ring」の詳細全文を読む
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