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NGC 6744 (Spiral Galaxy)


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NGC 6744
Spiral Galaxy (渦巻銀河)
Gx SBbc


別名 (Other names)
PGC 62836, ESO 104-42, AM 1905-635, Caldwell 101

明るさ (Brightness)
8.3等級

星座 (Constellation)

くじゃく座 (Pav) (Pavo)


距離 (Distance)
3,000万光年 (30 million light-years)

NGC 6744(Caldwell 101)は、棒渦巻銀河と渦巻銀河の中間型の銀河。
くじゃく座の方角にあり、銀河系から3,000万光年離れている。この銀河は、ぼんやりとした腕と、引き伸ばされた形をしたコアを持っており、われわれの近くにある銀河の中で最も銀河系に似ているものの一つと考えられている。
また、この銀河は少なくとも1個の変形した伴銀河 (NGC 6744A) を伴っている。
これは表面的には銀河系の伴銀河マゼラン雲に似ている。

NGC 6744 is a spiral galaxy located 30 million light years from the Earth in the constellation Pavo.

NGC 6744 (Spiral Galaxy) : Picture

Spiral Galaxy NGC 6744
Spiral Galaxy NGC 6744
(C) Don Goldman
Big, beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo. We see the disk of the nearby island universe tilted towards our line of sight. Orientation and composition give a strong sense of depth to this colorful galaxy portrait that covers an area about the angular size of the full moon. This giant galaxy's yellowish core is dominated by the light from old, cool stars. Beyond the core, spiral arms filled with young blue star clusters and pinkish star forming regions sweep past a smaller satellite galaxy at the lower left, reminiscent of the Milky Way's satellite galaxy the Large Magellanic Cloud.

NGC 6744
NGC 6744
(C) ESO

NGC 6744
NGC 6744
(C) NASA
This image from NASA's Galaxy Evolution Explorer shows NGC 6744, one of the galaxies most similar to our Milky Way in the local universe. This ultraviolet view highlights the vast extent of the fluffy spiral arms, and demonstrates that star formation can occur in the outer regions of galaxies.

The galaxy is situated in the constellation of Pavo at a distance of about 30 million light-years.

NGC 6744 is bigger than the Milky Way, with a disk stretching 175,000 light-years across. A small, distorted companion galaxy is located nearby, which is similar to our galaxy's Large Magellanic Cloud. This companion, called NGC 6744A, can be seen as a blob in the main galaxy's outer arm, at upper right.

NGC 6744
NGC 6744
(C) NASA

NGC 6744 NGC 6744
NGC 6744
(C) ESO
Spiral Galaxy NGC 6744
(C) Don Goldman
NGC 6744 NGC 6744
NGC 6744
(C) NASA
NGC 6744
(C) NASA
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NGC 6744 (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 6744. (2013, April 9). In Wikipedia.
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