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Pegasus Dwarf Irregular Galaxy
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Pegasus Dwarf Irregular Galaxy : ウィキペディア英語版
Pegasus Dwarf Irregular Galaxy

The Pegasus Dwarf Irregular Galaxy (also known as Peg DIG or the Pegasus Dwarf) is a dwarf irregular galaxy in the direction of the constellation Pegasus. It was discovered by A. G. Wilson in the 1950s. The Pegasus Dwarf is a companion of the Andromeda Galaxy in the Local Group.
==General information==

In 1975 Tully & Fisher determined that it was part of the Local Group. The metallicity and the related distance estimate has been subject to discussions in the scientific literature, with varying results, however, recently, by use of the tip of the red giant branch, a distance within 10% error was achieved in 2000
and then improved to 3% in 2005.

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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