At the end of 2019, scientists observed a significant decrease in the brightness of the stunning red supergiant star Betelgeuse, which may be a sign of its impending supernova explosion. Thanks to mathematical models and analysis using powerful tools such as VLT and Hubble Telescope, an international research team determined that this obstruction was caused by the ejection of a huge cloud of gas (“stardust”), which had cooled and hardened .
This Betelgeuse with Red superstar most famous Sky It is the second brightest star (after Betelgeuse) Orion, One of the most fascinating works of all time. Since September 2019, she has become the protagonist of a mystery that has fascinated astrophysicists, astronomers and amateur astronomers all over the world: in fact, this star is at the end of life. Life cycle, It started to darken gradually, losing 35% of its own brightness February 2020.Scholars speculate that this may be an upcoming signal Supernova explosion. Less than two years after the strange phenomenon was discovered, the reason for the loss brightness: Exhaust a lot of gas (the so-called “Stardust”) Hovering in space, after cooling, obscured the southern hemisphere of Betelgeuse.
What happened to this red supergiant star was determined by an international research team led by scientists from the Sorbonne University, the University of Paris, and the Institute of Astronomy of the University of Leuven (Belgium). They were in close contact with colleagues on exoplanets and NASA Bureau Goddard Space Flight Center’s Stellar Astrophysics Laboratory, University of Michigan Department of Astronomy, European Southern Observatory (ESO), Max Planck Institute for Extraterrestrial Physics and other research institutions.Used by scientists coordinated by Miguel Montargès, an astrophysicist at the Paris Observatory mathematical model And used different tools to analyze Betelgeuse, such as the most powerful Extra large telescope Dell ESO.
Betelgeuse, it has one pulp Up to 20 times only Although the “lifespan” of red supergiants is only about 8.5 million years, the brightness is 130,000 times higher.The stars have run outhydrogen And has passed the consumption of helium until it cannot melt its elements due to insufficient pressure and heat, it will collapse and explode Supernova. This process will produce a Black hole Or to Neutron Star. Before this dramatic and spectacular event, the star was destined to Lose quality; The darkness that changes the world is related to this process.Observation of the discharge of large gas clouds Hubble Telescope, And through VLT’s Spectral Polarization High Contrast Exoplanet Study (SPHERE), it was determined that the “shield” affected the southern part of the star.
“With Hubble, we can see matter leave the surface of the star and pass through the atmosphere, and then the formation of dust causes the star to darken,” he said in a statement. Press release Astrophysicist Andrea Dupree at the Harvard-Smithsonian Center for Astrophysics.When the temperature is Stellar photosphere Shrunk, the dust particles become concentrated electronic hardening, The cloud acts as a real screen, causing a loss of brightness. “We have directly witnessed the formation of so-called stardust. Dust ejected by evolved cold stars, such as the ejection we have just witnessed, may become the cornerstone of terrestrial planets and life,” said Professor Montargis. Observations of Betelgeuse will continue to study other phenomena related to the end of the red supergiant star. Research detailsThe dusty veil that obscures the Betelgeuse during the major dimming“Published in the authoritative scientific journal “Natural Astronomy”.