What is a high mass protostar?
A high mass protostar is the second stage of this star. A high mass protostar looks like a star but isn’t hot enough to become a star yet. On Earth high mass protostars would be considered a vacuum. They are hard to see because their light is blocked by dust surrounding it.
Why does a protostar mass increase over time?
Protostars grow in mass because material around the protostar, which feels a weaker pull of gravity and does not collapse as quickly as the protostar, continues to contract. This material rains down on the protostar, gradually increasing the mass.
What is a high mass main sequence star?
A main sequence star is powered by fusion of hydrogen into helium in its core. Fusion is stabilized by a natural pressure-temperature thermostat. High-mass main sequence stars have shorter lifetimes than low-mass main sequence stars.
Why does temperature increase more rapidly in a more massive protostar than in a less massive protostar?
why does heat build up more rapidly in a massive protostar than in a less massive one? the old main sequence star will have burned through its hydrogen, producing larger amounts of helium in the process. a young main sequence star is just starting and by starting it generates energy by fusing hydrogen into helium.
What elements are in a protostar?
Early protostars would have been formed from the gasses that were created soon after the big bang. They would be 75% Hydrogen, 25% Helium with traces of Lithium.
What is a protostar made of?
Protostar is an early stage in the evolution of a star that usually grows to the point of beginning nuclear fusion and becoming a star by gathering mass. It is made of a contracting cloud of cold and dark interstellar medium (mostly hydrogen gas).
What does a protostar do?
As the protostar rotates, it generates a strong magnetic field. The magnetic field also generates a strong protostellar wind, which is an outward flow of particles into space. Many protostars also send out high-speed streams or jets of gas into space.
What are high mass stars?
High-mass stars are very luminous and short lived. They forge heavy elements in their cores, explode as supernovas, and expel these elements into space. Apart from hydrogen and helium, most of the elements in the universe, including those comprising Earth and everything on it, came from these stars.
What are the 6 stages of a high mass star?
The exact stages of evolutions are:
- Subgiant Branch (SGB) – hydrogen shell burning – outer layers swell.
- Red Giant Branch – helium ash core compresses – increased hydrogen shell burning.
- First Dredge Up – expanding atmosphere cools star – stirs carbon, nitrogen and oxygen upward – star heats up.
Do less massive protostars form main sequence stars quicker?
A protostar becomes a main sequence star when its core temperature exceeds 10 million K. This is the temperature needed for hydrogen fusion to operate efficiently. The length of time all of this takes depends on the mass of the star. The more massive the star, the faster everything happens.
Why does the protostar heat up two reasons?
Stage 2: Protostar. As a gas clump collapses it heats up because the gas particles run into each other. The energy the gas particles had from falling under the force of gravity gets converted to heat energy. The gas clump becomes warm enough to produce a lot of infrared and microwave radiation.
What is the general size of a protostar?
108 km
STAGE 4: A PROTOSTAR
| Approximate Time to Next Stage: | 106 yr |
|---|---|
| Central Temperature: | 1,000,000 K |
| Surface Temperature: | 3000 K |
| Central Density: | 1024 particles/m3 |
| Diameter: | 108 km |