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NGC 2736 (Pencil Nebula)


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NGC 2736
Pencil Nebula (鉛筆星雲)
Emission Nebula (散光星雲)
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別名 (Other names)

ESO 260-N14

星座 (Constellation)
ほ座 (Vel) (Vela)

距離 (Distance)
800光年 (800 light-years)

Pencil Nebula (NGC 2736) is an emission nebula located 800 light years from the Earth in the constellation Vela.

NGC 2736 (Pencil Nebula) : Picture

NGC 2736: The Pencil Nebula
NGC 2736: The Pencil Nebula
(C) NASA
This shock wave plows through space at over 500,000 kilometers per hour. Moving toward to bottom of this beautifully detailed color composite, the thin, braided filaments are actually long ripples in a sheet of glowing gas seen almost edge on. Cataloged as NGC 2736, its narrow appearance suggests its popular name, the Pencil Nebula. About 5 light-years long and a mere 800 light-years away, the Pencil Nebula is only a small part of the Vela supernova remnant. The Vela remnant itself is around 100 light-years in diameter and is the expanding debris cloud of a star that was seen to explode about 11,000 years ago. Initially, the shock wave was moving at millions of kilometers per hour but has slowed considerably, sweeping up surrounding interstellar gas.

NGC 2736: The Pencil Nebula
NGC 2736: The Pencil Nebula
(C) NASA

The Pencil Nebula Supernova Shockwave
The Pencil Nebula Supernova Shockwave
(C) NASA
At 500,000 kilometers per hour, a supernova shockwave plows through interstellar space. This shockwave is known as the Pencil Nebula, or NGC 2736, and is part of the Vela supernova remnant, an expanding shell of a star that exploded about 11,000 years ago. Initially the shockwave was moving at millions of kilometers per hour, but the weight of all the gas it has swept up has slowed it considerably. Pictured above, the shockwave moves from left to right, as can be discerned by the lack of gas on the left. The above region spans nearly a light year across, a small part of the 100+ light-year span of the entire Vela supernova remnant. The Hubble Space Telscope ACS captured the above image last October.
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NGC 2736 (Pencil Nebula) : Movie

Zooming in on the Pencil Nebula
This video starts with a wide field view of the spectacular southern part of the Milky Way. We close in gradually on a large bubble-shaped region of glowing gas in the constellation of Vela. This is the Vela supernova remnant, gas clouds that were ejected from a dying star in a huge explosion about 11,000 years ago. The final detailed view comes from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile.

Panning across the Pencil Nebula, a strangely-shaped leftover from a vast explosion
This video gives a close-up view of the oddly shaped Pencil Nebula (NGC 2736) in a new image from ESO's La Silla Observatory in Chile. This nebula is a small part of a huge remnant left over after a supernova explosion that took place about 11,000 years ago. The image was produced by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile.
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