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DEM L50 (Supernova Remnant)


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DEM L50
Supernova Remnant (超新星残骸)
SNR

別名 (Other names)
N186, N 186, DEM L 50

星座 (Constellation)

テーブルさん座 (Men) (Mensa)


距離 (Distance)
160,000光年 (160,000 light-years)

DEM L50 is a supernova remnant located 160,000 light years from the Earth in the constellation Mensa.

DEM L50 (Supernova Remnant) : Picture

Supernova Remnant DEM L50
Supernova Remnant DEM L50
(C) NASA
This composite image shows the superbubble DEM L50 (a.k.a. N186) located in the Large Magellanic Cloud about 160,000 light years from Earth. Superbubbles are found in regions where massive stars have formed in the last few million years. The massive stars produce intense radiation, expel matter at high speeds, and race through their evolution to explode as supernovas . The winds and supernova shock waves carve out huge cavities called superbubbles in the surrounding gas.

X-rays from NASA's Chandra X-ray Observatory are shown in pink and optical data from the Magellanic Cloud Emission Line Survey (MCELS) are colored in red, green and blue. The MCELS data were obtained with the University of Michigan's 0.9-meter Curtis Schmidt telescope at Cerro Tololo Inter-American Observatory (CTIO). The shape of DEM L50 is approximately an ellipse, with a supernova remnant named SNR N186 D located on its northern edge (roll your mouse over the image above for labels).

Like another superbubble in the LMC, N44 (see last year's press release), DEM L50 gives off about 20 times more X-rays than expected from standard models for the evolution of superbubbles. A Chandra study published in 2011 showed that there are two extra sources of the bright X-ray emission: supernova shock waves striking the walls of the cavities, and hot material evaporating from the cavity walls.

DEM L50 DEM L50
DEM L50
(C) NASA
DEM L50
(C) NASA
X-ray Image of DEM L50 DEM L50
X-ray Image of DEM L50
(C) NASA
DEM L50
(C) NASA
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DEM L50 (Supernova Remnant) : Movie

DEM L50 in 60 Seconds
DEM L50 is what astronomers call a superbubble. These objects are found in regions where massive stars have formed, raced through their evolution, and exploded as supernovas.
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