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DEM L241 (Supernova Remnant)


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DEM L241
Supernova Remnant (超新星残骸)
SNR

別名 (Other names)
DEM L 241

星座 (Constellation)
かじき座 (Dor) (Dorado)


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

DEM L241 is a supernova remnant located 160,000 light years from the Earth in the constellation Dorado.

DEM L241 (Supernova Remnant) : Picture

DEM L241
DEM L241: Hardy Star Survives Supernova Blast
(C) X-ray: NASA/CXC/SAO/F.Seward et al; Optical: NOAO/CTIO/MCELS, DSS
When a massive star runs out fuel, it collapses and explodes as a supernova. Although these explosions are extremely powerful, it is possible for a companion star to endure the blast. A team of astronomers using NASA's Chandra X-ray Observatory and other telescopes has found evidence for one of these survivors.

This hardy star is in a stellar explosion's debris field - also called its supernova remnant - located in an HII region called DEM L241. An HII (pronounced "H-two") region is created when the radiation from hot, young stars strips away the electrons from neutral hydrogen atoms (HI) to form clouds of ionized hydrogen (HII). This HII region is located in the Large Magellanic Cloud, a small companion galaxy to the Milky Way.

A new composite image of DEM L241 contains Chandra data (purple) that outlines the supernova remnant. The remnant remains hot and therefore X-ray bright for thousands of years after the original explosion occurred. Also included in this image are optical data from the Magellanic Cloud Emission Line Survey (MCELS) taken from ground-based telescopes in Chile (yellow and cyan), which trace the HII emission produced by DEM L241. Additional optical data from the Digitized Sky Survey (white) are also included, showing stars in the field.

DEM L241
Labeled of DEM L241
(C) NASA

DEM L241
Wide of DEM L241
(C) NASA

DEM L241 DEM L241
DEM L241
(C) NASA
Optical of DEM L241
(C) NASA
DEM L241
X-ray of DEM L241
(C) NASA
These images show data from Chandra that provides evidence for the survival of a companion star from the blast of a supernova explosion. Chandra's X-rays reveal a point-like source in the supernova remnant at the location of a massive star. The data suggest that mass is being pulled away from the massive star towards a neutron star or a black hole companion. If confirmed, this would be only the third binary system containing both a massive star and a neutron star or black hole ever found in the aftermath of a supernova. This supernova remnant is found embedded in clouds of ionized hydrogen, which are shown in optical light from the MCELS survey, along with additional optical data from the DSS.
(Credit: X-ray: NASA/CXC/SAO/F.Seward et al; Optical: NOAO/CTIO/MCELS, DSS)
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DEM L241 (Supernova Remnant) : Movie

A Tour of DEM L241
When a massive star runs out fuel, it collapses and explodes as a supernova.
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