A star that exploded into brightness nearly 200 years ago can now be explored in glorious, multi-wavelength detail. In a new video, a team of scientists modeled the Homunculus Nebula around the star Eta Carinae in three dimensions, enabling insight i
and became one of the brightest stars in the night sky for years by the early 1840s. The gas and dust this eruption ejected into the space around the binary is known as the Homunculus Nebula, the gradual expansion of which obscured the star so that it could no longer be seen at all with the naked eye.
The new models are a continuation of these probes into the giant structure. Hubble and Chandra observations have revealed details in visible, ultraviolet, and X-ray radiation, while the Spitzer Space Telescope has contributed infrared wavelengths of the wider Carina Nebula for a holistic reconstruction.
"We can not only tell the story of the Great Eruption, but also showcase the resulting nebula in 3D."Because the region is so dusty, it's challenging to get a very detailed handle on the stars themselves. We know that there are at least two stars, both of them blue giants. One is around 100 times the mass of the Sun, the other between 30 and 80 times the mass of the Sun. They orbit each other once every 5.5 years.
Currently, Eta Carinae is once again visible to the naked eye . Astronomers believe that it could end its life in a massive supernova, which in turn could see the formation of a stellar-massGiven that we don't know much about the stars themselves, though, the binary's future is difficult to predict. In addition, stars in close stellar binaries can destabilize each other and disrupt the normal course of events.
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