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NGC 3982 (Spiral Galaxy)


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NGC 3982
Spiral Galaxy (渦巻銀河)
Gx SBb


別名 (Other names)
PGC 37520, UGC 6918, MCG 9-20-36

明るさ (Brightness)
12.0等級

星座 (Constellation)
おおぐま座 (UMa) (Ursa Major)

距離 (Distance)
6,800万光年 (68 million light-years)

NGC 3982 is a spiral galaxy located 68 million light years from the Earth in the constellation Ursa Major.

NGC 3982 (Spiral Galaxy) : Picture

NGC 3982 (Spiral Galaxy)
NGC 3982 (Spiral Galaxy)
(C) NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Though the universe is chock full of spiral-shaped galaxies, no two look exactly the same. This face-on spiral galaxy, called NGC 3982, is striking for its rich tapestry of star birth, along with its winding arms. The arms are lined with pink star-forming regions of glowing hydrogen, newborn blue star clusters, and obscuring dust lanes that provide the raw material for future generations of stars. The bright nucleus is home to an older population of stars, which grow ever more densely packed toward the centre.

NGC 3982 is located about 68 million light-years away in the constellation Ursa Major. The galaxy spans about 30,000 light-years, one-third of the size of our Milky Way galaxy. This colour image is composed of exposures taken by the Hubble Space Telescope's Wide Field Planetary Camera 2 (WFPC2), the Advanced Camera for Surveys (ACS), and the Wide Field Camera 3 (WFC3). The observations were taken between March 2000 and August 2009. The rich colour range comes from the fact that the galaxy was photographed invisible and near-infrared light. Also used was a filter that isolates hydrogen emission that emanates from bright star-forming regions dotting the spiral arms.

NGC 3982 (Spiral Galaxy)
NGC 3982 (Spiral Galaxy)
(C) European Space Agency and Stephen Smartt (University of Cambridge)
A team of European astronomers is using the NASA/ESA Hubble Space Telescope to look back in time. They have imaged the spiral galaxy NGC 3982 and hundreds of other galaxies in the hope that one of the millions of stars in these images will some day explode as a supernova. They can then look back and pinpoint the exact star that has exploded. Only two such supernova 'mother stars' have ever been identified.

NGC 3982 (Spiral Galaxy) NGC 3982 (Spiral Galaxy)
NGC 3982 (Spiral Galaxy)
(C) NASA/ESA/Hubble
NGC 3982 (Spiral Galaxy)
(C) NASA/ESA
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