Scientists report that the average surface temperature of Betelgeuse, At the end of last year there was news that the Betelgeuse star faded significantly and eventually dropped to around 40% of its usual brightness.
This activity led to speculation among the population that the red super giant will soon explode as a large supernova.
But astronomers have more harmless theories to explain the dark behavior of stars.
New calculations support the theory that Betelgeuse, like a super red giant star, may have escaped from its outer layers.
From time to time, red supergiants throw material from their condensed surfaces as dust around stars.
When cold and soluble, dust particles absorb part of the light directed at us and obstruct our view.
That’s still true: astronomers hope Betelgeuse will explode as a supernova in the next 100,000 years if the core collapses. But the embezzlement of stars that began in October is not always a sign of an upcoming supernova, according to Massie. Scientists report that the average surface temperature of Betelgeuse.
One theory is that newly formed dust absorbs some of Betelgeuse’s light. Others say that the large convection cells at Betelgeuse draw hot material to the surface where it cools before falling back into it.
One easy way to understand this option is to determine an effective Betelgeuse surface temperature, Researcher said.
Measuring star temperature is not an easy task. Scientists can’t just point the thermometer at the star and get a reading. By looking at the spectrum of light emitted by stars, astronomers can calculate their temperature.
The light from a bright star is often too strong for a detailed spectrum, but Massie uses filters that effectively “weaken” the signal so that it can track the spectrum for a particular signature: the absorption of light from the titanium oxide molecule. Scientists report that the average surface temperature of Betelgeuse.
According to Levesque, relatively cool big stars like Betelgeuse can form and collect titanium oxide in the upper layers.
It absorbs certain wavelengths of light and leaves a “spoon” signal in the red supergiant spectrum with which a scientist can determine the star’s surface temperature.
According to their calculations, the average surface temperature of Betelgeuse on February 14 was around 3,325 degrees Celsius or 6,077 F. It was only 50 to 100 degrees Celsius cooler than the temperature that the team, including Massie and Levesque, calculated as Betelgeuse’s surface in 2004, many years before the dramatic blackout began.
These results raise doubts about the darkening of Betelgeuse, when one of the star’s massive convection cells extracts hot gas from the surface, where it cools.
Many stars have these convection cells, including our own sun. They look like the surface of a jar of boiling water, Levesque said.
However, because our solar convection cells are large and relatively small, roughly the size of Texas or Mexican red supergiants such as Betelgeuse, which is bigger, cooler, and weaker, only has three or four massive convection cells that reach most of its surface,Scientists report that the average surface temperature of Betelgeuse.
If one of these large cells rises to the surface of Betelgeuse, Levesque and Massie will experience a much higher temperature drop than between 2004 and 2020.
Researchers say: The more we can learn about fluctuations in normal temperatures, dust, and convection cells, the better we can understand and recognize when something truly unique like a supernova can occur.