9/8/2023 0 Comments Mass effect 3 horsehead nebulaThey will present their idea in a future issue of the journal Astronomy and Astrophysics. Deuterium fusion should cause brown dwarfs and very-low-mass red dwarfs to pulsate, say Francesco Palla of the Arcetri Astrophysical Observatory in Italy and Isabelle Baraffe at the Astronomical Research Center of Lyon in France. Deuterium is hydrogen-2, the rare heavy isotope of hydrogen. When young, they also generate energy by converting deuterium into helium-3. Brown dwarfs still shine, though, chiefly by transforming gravitational energy into heat. Brown dwarfs are born with too little mass - less than 8 percent of the Sun's - to sustain the fusion of hydrogen-1, the nuclear reaction powering main sequence stars like the Sun. Such pulsations may already have been detected in Orion. FebruBrown dwarfs should pulsate when they're young, predict astronomers in Italy and France.
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