翻訳と辞書
Words near each other
・ NGC 4555
・ NGC 4559
・ NGC 4565
・ NGC 4567 and NGC 4568
・ NGC 457
・ NGC 4571
・ NGC 46
・ NGC 4603
・ NGC 4605
・ NGC 4609
・ NGC 4618
・ NGC 462
・ NGC 4622
・ NGC 4625
・ NGC 4627
NGC 4631
・ NGC 4631 Group
・ NGC 4634
・ NGC 4639
・ NGC 4650A
・ NGC 4651
・ NGC 4654
・ NGC 4656 and NGC 4657
・ NGC 4658
・ NGC 4666
・ NGC 467
・ NGC 4696
・ NGC 4697
・ NGC 4698
・ NGC 47


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NGC 4631 : ウィキペディア英語版
NGC 4631

NGC 4631 (also known as the Whale Galaxy or Caldwell 32) is an edge-on spiral galaxy in the constellation Canes Venatici. This galaxy's slightly distorted wedge shape gives it the appearance of a herring or a whale, hence its nickname.〔(【引用サイトリンク】 work=Results for NGC 4631 )〕 Because this nearby galaxy is seen edge-on from Earth, professional astronomers observe this galaxy to better understand the gas and stars located outside the plane of the galaxy.
== Starburst and superwind ==

NGC 4631 contains a central starburst, which is a region of intense star formation. The strong star formation is evident in the emission from ionized hydrogen and interstellar dust heated by the stars formed in the starburst. The most massive stars that form in star formation regions only burn hydrogen gas through fusion for a short period of time, after which they explode as supernovae. So many supernovae have exploded in the center of NGC 4631 that they are blowing gas out of the plane of the galaxy. This superwind can be seen in X-rays and in spectral line emission.〔 The gas from this superwind has produced a giant, diffuse corona of hot, X-ray emitting gas around the whole galaxy.

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「NGC 4631」の詳細全文を読む



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