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Astronomers have discovered a so-called proto-disc around the proto-brown dwarf Mayrit. With this discovery, they were able to confirm for the first time that this celestial body was formed in the same way as sun-like stars.
Brown dwarfs are celestial bodies whose characteristics are between those of stars and planets: their mass is too small to maintain the process of hydrogen fusion—the characteristic process for a star. On the other hand, they are significantly more massive than big planets; they possess about ten times the mass of Jupiter or more. This mass is sufficient to bring about a deuterium fusion in the core. That is why, when they are young, they can shine like faint stars. Although brown dwarfs frequently occur in the universe, they are difficult to examine and investigate. In particular, their formation is a subject of controversial debate. For the first time the LMU astronomer Basmah Riaz has now verified a so-called pseudo-disc around a proto-brown dwarf together with Masahiro Machida (Kyushu University, Japan) and Dimitris Stamatellos (University of Central Lancashire, Great Britain)—further proof that brown dwarfs emerge according to the same rules as "true" stars. The scientists report their results in the trade journal Monthly Notices of the Royal Astronomical Society.
Decade - Model - Dwarfs - Stars - Collapse
"A decade ago, a model was already developed in which brown dwarfs are formed, like normal stars, through the collapse of a cloud of gas and dust. However, so...
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