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NGC 1499 (California Nebula)


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NGC 1499
California Nebula (カリフォルニア星雲)
Emission Nebula (散光星雲)
Nb EN


別名 (Other names)
LBN 756, Sh2-220, Sharpless 220, Sh 2-220

星座 (Constellation)
ペルセウス座 (Per) (Perseus)

距離 (Distance)
1,500光年 (1,500 light-years)

カリフォルニア星雲(NGC1499)は、ペルセウス座にある散光星雲。

長時間露光で撮影された写真で見ると、形がアメリカ合衆国のカリフォルニア州によく似ているためにこの名が付けられている。
ペルセウス座ξ星のすぐ北に位置するが、表面輝度は非常に低いためにほとんど肉眼では見ることができない。
写真に撮影すると赤い星雲の姿を写すことができる。

カリフォルニア星雲はエドワード・エマーソン・バーナードによって1884年に発見された。

California nebula (NGC 1499) is an emission nebula located 1,500 light years from the Earth in the constellation Perseus.

NGC 1499 (California Nebula) : Picture

NGC 1499: The California Nebula
NGC 1499: The California Nebula
(C) NASA
What's California doing in space? Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the Milky Way's Orion Arm, only about 1,500 light-years from the California Nebula. Also known as NGC 1499, the classic emission nebula is around 100 light-years long. On many images, the most prominent glow of the California Nebula is the red light characteristic of hydrogen atoms recombining with long lost electrons, stripped away (ionized) by energetic starlight. In the above image, however, hydrogen is colored green, while sulfur is mapped to red and oxygen mapped to blue. The star most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot, bluish Xi Persei, just outside the right image edge. A regular target for astrophotographers, the California Nebula can be spotted with a wide-field telescope under a dark sky toward the constellation of Perseus, not far from the Pleiades.

Clouds of Perseus
Clouds of Perseus
(C) NASA
Cosmic clouds of gas and dust drift across this magnificent panorama, spanning some 17 degrees near the southern boundary of the heroic constellation Perseus. The collaborative skyscape begins with bluish stars of Perseus at the left, but the eye is drawn to the striking, red NGC 1499. Also known as the California Nebula, its characteristic glow of atomic hydrogen gas is powered by ultraviolet light from luminous blue star Xi Persei immediately to the nebula's right. Farther along, intriguing young star cluster IC 348 and neighboring Flying Ghost Nebula are right of center. Connected by dark and dusty tendrils on the outskirts of a giant molecular cloud, another active star forming region, NGC 1333, lies near the upper right edge of the wide field of view. Shining faintly, dust clouds strewn throughout the scene are hovering hundreds of light-years above the galactic plane and reflect starlight from the Milky Way.

NGC 1499
NGC 1499 (California Nebula/Left)
Seven Sisters (Right)
(C) NASA

NGC1499 (California Nebula)
NGC 1499 (California Nebula)
(C) NASA

NGC1499 (California Nebula) NGC1499
NGC 1499 (California Nebula)
(C) NASA
NGC 1499
(C) NASA
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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。
カリフォルニア星雲. (2012, October 27). In Wikipedia.
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