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NGC 7479 (Barred Spiral Galaxy)


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NGC 7479
Barred Spiral Galaxy (棒渦巻銀河)
Gx SBc

別名 (Other names)
PGC 70419, UGC 12343, MCG 2-58-60, Caldwell 44

明るさ (Brightness)
10.9等級

星座 (Constellation)
ペガスス座 (Peg) (Pegasus)


距離 (Distance)
1億500万光年 (105 million light-years)

NGC 7479またはカルドウェル44は、ペガスス座の方角に1億500万光年の位置にある棒渦巻銀河。
1784年にウィリアム・ハーシェルが発見した。NGC 7479内で超新星SN 1990UとSN 2009ifが発生している。
NGC 7479はセイファート銀河にも分類され、核や外腕の部分ではスターバーストが発生している。

極性研究により、近年、融合したものであることが示された。

NGC 7479 is a barred spiral galaxy located 105 million light years from the Earth in the constellation Pegasus.

NGC 7479 (Barred Spiral Galaxy) : Picture

NGC 7479 (Barred Spiral Galaxy)
NGC 7479 (Barred Spiral Galaxy)
(C) NASA/ESA
In this NASA/ESA Hubble Space Telescope image of NGC 7479 — created from observations at visible and near-infrared wavelengths — the tightly wound arms of the spiral galaxy create an inverted ‘S’, as they spin in an anticlockwise direction. However, at radio wavelengths, this galaxy, sometimes nicknamed the Propeller Galaxy, spins the other way, with a jet of radiation that bends in the opposite direction to the stars and dust in the arms of the galaxy.
Astronomers think that the radio jet in NGC 7479 was put into its bizarre backwards spin following a merger with another galaxy.
Star formation is reignited by galactic collisions, and indeed NGC 7479 is undergoing starburst activity, with many bright, young stars visible in the spiral arms and disc. The three brightest stars in this image, however, are foreground stars — caught on camera because they lie between the galaxy and Hubble.

NGC 7479 (Barred Spiral Galaxy)
NGC 7479 (Barred Spiral Galaxy)
(C) NOAO

NGC 7479 (Barred Spiral Galaxy)
NGC 7479 (Barred Spiral Galaxy)
(C) Jschulman555

NGC 7479 NGC 7479
NGC 7479
(C) NASA/ESA
NGC 7479
(C) NOAO
NGC 7479 NGC 7479
NGC 7479
(C) Jschulman555
NGC 7479
(C) Hewholooks
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NGC 7479 (Barred Spiral Galaxy) : Movie

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「ウィキペディア(wikipedia):フリー百科事典」より文章引用。
NGC 7479. (2013, May 31). In Wikipedia.
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