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Jan 4, 2021 · Starting at over about 13 times the mass of Jupiter, these objects are massive enough to support core fusion - not of normal hydrogen, but deuterium. This is also known as 'heavy' hydrogen; it's an isotope of hydrogen with a proton and a neutron in the nucleus instead of just a single proton.
1 day ago · The further development heavily depends on the mass of the evolving protostar; in the following, The protostar mass is compared to the mass of the Sun: 1.0 M ☉ (2.0×10 30 kg) means 1 solar mass. Protostars are encompassed in dust, and are thus more readily visible at infrared wavelengths.
Since about half of all known stars form systems of multiple stars and because Jupiter is made of the same elements as the Sun (hydrogen and helium), it has been suggested that the Solar System might have been early in its formation a protostar system with Jupiter being the second but failed protostar, but Jupiter has far too little mass to ...
Since Jupiter is made of the same elements as the Sun (hydrogen and helium) it has been suggested that the Solar System might have been early in its formation a system of multiple protostars, which are quite common, with Jupiter being the second but failed protostar.
Summary: Stars form in cold, dense regions of space called molecular clouds. When the force of gravity pulling in on the cloud is greater than the strength of internal pressure pushing out, the cloud collapses into a protostar.
Protostars also generate energy, but it comes from the radiation liberated at the shocks on its surface and on the surface of its surrounding disk. The radiation thus created must traverse the interstellar dust in the surrounding dense core.
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Oct 16, 2023 · The April issue features a JWST image of a star early in its development. if protostars do not generate their own energy through nuclear fusion yet, what produces the infrared light captured by...
