Astronomers have tracked the timeline of a starburst in a neighboring galaxy using data from three NASA telescopes.
When a massive star reaches the end of its life, it explodes in a brilliant burst of light known as a Supernova. These starbursts leave behind colorful remnants of material ejected by the violent explosion.
One of the supernova remnants, named SNR 0519-69.0 (abbreviated SNR 0519), is the remnant of blast debris. white dwarf Several hundred years ago, from our perspective here on Earth. It is located 160,000 light-years from Earth in A Milky Way Companion galaxy known as Large Magellanic Cloud.
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Using data from NASA’s Chandra X-ray Observatory, Hubble Space Telescope With the recently retired Spitzer Space Telescope, astronomers were able to determine roughly how long the star had exploded in SNR 0519 and what its cosmic environment was like at the time, according to a permit (Opens in a new tab) From the Chandra X-ray Observatory.
“This data provides scientists with an opportunity to ‘rewind’ the film of stellar evolution that has since begun and know when it began,” Chandra’s team members wrote in the statement.
SNR 0519, classified as a Type Ia supernova, is the result of a white dwarf star reaching critical mass by pulling matter from a companion star or merging with another white dwarf. Astronomers measured the velocity of matter in the blast wave from Explosion By comparing Hubble images taken in 2010, 2011 and 2020, which indicate that light from the explosion reached Earth about 670 years ago traveling at 5.5 million miles per hour (9 million kilometers per hour).
However, the data from Chandra And the Spitzer It suggests that the material in the blast wave likely slowed down after hitting thick clouds of surrounding gas. If so, the initial eruption would have occurred as recently as 670 years ago. According to the statement, additional observations from Hubble will help determine exactly when the star exploded.
Using data from the three telescopes, astronomers were able to create a composite image of SNR 0519, which NASA released on September 12. and purple straight.
Optical data from Hubble shows the surrounding remnant in red, along with surrounding stars in white. The brightest regions in the X-ray data represent the slowest moving materials, while the regions with no X-ray emissions are associated with faster moving materials, according to the statement.
Their findings were Posted on August 18 (Opens in a new tab) in The Astrophysical Journal.
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