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HXMM01
HXMM01, known more formally as 1HERMES S250 J022016.5−060143, is a starburst galaxy located in the northwestern portion of the constellation Cetus.〔Inferred from right ascension and declination of galaxy using the Fourmilab ''Virtual Telescope''.〕 Discovered in 2013 by a team at the University of California, Irvine, it was discovered that HXMM01 is actually still forming from its two parent galaxies as part of the "brightest, most luminous and most gas-rich submillimeter-bright galaxy merger known." When the merger is complete, HXMM01 will rapidly evolve to become a giant elliptical galaxy with a mass about four times that of the Milky Way.〔 As of 2013, HXMM01 has been observed to form about of stars every year, with an efficiency ten times greater than that of typical galaxies〔〔Typical galaxies are those of similar mass and phase of evolution to HXMM01, not those considered "typical" in the Universe as a whole or with respect to the Milky Way.〕 and far more than the Milky Way's per year.
==History of observation==
A team at the University of California, Irvine, led by Asantha Cooray, was the first to detect and characterize HXMM01 in data from the ''Herschel'' space telescope's HerMES instrument. Initially noticed as an "amazing, bright blob" in an otherwise cold region of the cosmos, the galaxy was revealed to be an extremely bright submillimeter galaxy (SMG) after an extensive series of observations across the electromagnetic spectrum. Analyses of the data, published in May 2013,〔〔 revealed the galaxy to be a merging pair with a mass at least ten times that of the Milky Way.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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