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NGC 4631 (Whale Galaxy)


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NGC 4631
Edge-on Spiral Galaxy (エッジオン銀河)
Whale Galaxy (クジラ銀河)
Gx SBcd


別名 (Other names)
PGC 42637, UGC 7865, Arp 281, Caldwell 32

明るさ (Brightness)
9等級

星座 (Constellation)
りょうけん座 (CVn) (Canes Venatici)

距離 (Distance)
2,500万光年 (25 million light-years)

NGC 4631 (Whale Galaxy) is a spiral galaxy located 25 million light years from the Earth in the constellation Canes Venatici.

NGC 4631 (Whale Galaxy) : Picture

NGC4631 (Whale Galaxy)
NGC 4631 (Whale Galaxy)
(C) NASA

The Whale Galaxy
The Whale Galaxy
(C) Adam Block, Mt. Lemmon SkyCenter, U. Arizona Guest Astronomers: Tom Bash and Craig Gates
NGC 4631 is a big beautiful spiral galaxy. Seen edge-on, it lies only 25 million light-years away in the well-trained northern constellation Canes Venatici. The galaxy's slightly distorted wedge shape suggests to some a cosmic herring and to others its popular moniker, The Whale Galaxy. Either way, it is similar in size to our own Milky Way. In this gorgeous color image, the galaxy's yellowish core, dark dust clouds, bright blue star clusters, and red star forming regions are easy to spot. A companion galaxy, the small elliptical NGC 4627, is just above the Whale Galaxy. Out of view, off the lower edge of the picture lies another distorted galaxy, hockey stick-shaped NGC 4656. The distortions and mingling trails of gas and dust detected at other wavelengths suggest that all three galaxies have had close encounters with each other in their past. The Whale Galaxy is also known to have spouted a halo of hot gas glowing in x-rays.

NGC4631
NGC 4631
(C) NASA

NGC4631 and NGC4656
NGC 4631 (Whale Galaxy) and NGC 4656 (Hockey Stick Galaxy)
(C) NASA
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NGC 4631 (Whale Galaxy) : Movie

NGC 4631 The Whale Galaxy Dissolve into Chandra/Hubble Image
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