SNR 0509-67.5

SNR 0509-67.5 is a remnant from a supernova in the Large Magellanic Cloud (LMC), that is 160,000 light years away in the constellation Dorado. It displays a clear shock wave shock shell pattern.

Optical and X-ray composite image

Diffuse nebula
Shock wave in Optical and X-ray image of Supernova SNR B0509-67.5 - optical in red and X-ray in green.
Observation data: J2000 epoch
Subtype	supernova remnant
Right ascension	05h 09m 31.0s
Declination	−67° 31′ 18″
Distance	160,000 ly
Constellation	Dorado

It was probably a type Ia supernova, as indicated by the detection in 2004 of the elements silicon and iron. Any surviving stars should not have moved far from the site of the explosion. Researchers at the Space Telescope Science Institute in Baltimore, Md. have identified light from the supernova that was reflected off of interstellar dust, delaying its arrival at Earth by 400 years, allowing scientists to study the initial blast. This delay, called a light echo, allowed the astronomers to measure the spectral signature of the light from the explosion. By virtue of the color signature, astronomers were able to deduce it was a Type Ia supernova. Scientists have also observed the supernova remnant at X-ray and visible wavelengths, and studied a light echo that helps assess the energy involved in this unusually energetic supernova.[1]