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What is the correct life sequence of a star?
The correct life sequence of a star starts with a protostar, which forms from a dense cloud of gas and dust. The protostar then evolves into a main sequence star, where it fuses hydrogen atoms to form helium in its core. Depending on its mass, the star will either become a red giant or a supergiant before eventually shedding its outer layers to become a white dwarf, neutron star, or black hole.
What comes after stellar nebula?
After a stellar nebula, the next stage in stellar evolution depends on the mass of the star that forms from it. For a low to medium mass star, like our Sun, the nebula condenses to form a protostar, which eventually evolves into a main sequence star. In contrast, for more massive stars, after the protostar stage, they also enter the main sequence phase but will eventually progress to more complex stages, leading to supernova events and the formation of neutron stars or black holes.
What is a protostar's energy source?
A protostar's energy source primarily comes from gravitational contraction. As the gas and dust in a molecular cloud collapse under gravity, they form a dense core that heats up due to the increasing pressure. This process generates thermal energy, which raises the temperature of the protostar. Eventually, when the core temperature becomes high enough, nuclear fusion of hydrogen into helium begins, marking the transition to a main sequence star.
What comes first a Nebula or a protostar?
A nebula comes first; it is a large cloud of gas and dust in space. Under the influence of gravity, regions within the nebula can collapse to form a protostar. As the material falls inward, the protostar heats up and begins the process of nuclear fusion, eventually leading to the formation of a star.
Will a protostar form near the end of a star's life cycle?
No, a protostar is basically the BEGINNING of a star's life cycle.
What is the correct life sequence of a star?
The correct life sequence of a star starts with a protostar, which forms from a dense cloud of gas and dust. The protostar then evolves into a main sequence star, where it fuses hydrogen atoms to form helium in its core. Depending on its mass, the star will either become a red giant or a supergiant before eventually shedding its outer layers to become a white dwarf, neutron star, or black hole.
why is a protostar the second phase of a star's life?
A protostar is the second phase of a star's life because it forms after a molecular cloud collapses under its own gravity, leading to the accumulation of material in a dense core. This core heats up as it contracts, eventually reaching temperatures and pressures sufficient to initiate nuclear fusion. The protostar stage is characterized by the gathering of mass and the development of a surrounding disk of gas and dust, which can eventually form planets. Once nuclear fusion begins in the core, the protostar evolves into a main sequence star.
Another name for the interstellar matter that will eventually form a star is?
protostar or nebula
What comes after stellar nebula?
After a stellar nebula, the next stage in stellar evolution depends on the mass of the star that forms from it. For a low to medium mass star, like our Sun, the nebula condenses to form a protostar, which eventually evolves into a main sequence star. In contrast, for more massive stars, after the protostar stage, they also enter the main sequence phase but will eventually progress to more complex stages, leading to supernova events and the formation of neutron stars or black holes.
What is a protostar's energy source?
A protostar's energy source primarily comes from gravitational contraction. As the gas and dust in a molecular cloud collapse under gravity, they form a dense core that heats up due to the increasing pressure. This process generates thermal energy, which raises the temperature of the protostar. Eventually, when the core temperature becomes high enough, nuclear fusion of hydrogen into helium begins, marking the transition to a main sequence star.
When does equilibrium occur in a protostar?
Equilibrium in a protostar occurs when the force of gravity pulling matter inward is balanced by the force of radiation or gas pressure pushing matter outward. This typically happens when a protostar reaches the main sequence phase of its evolution, where nuclear fusion in its core stabilizes the star's energy output.
Why is the time from protostar to black hole shorter than the time from protostar to white dwarf?
The mass of the progenitor star has to be massive to form a black hole and thus it will have a shorter time on the main sequence compared to a medium sized star.
What was the early form of the sun called?
Before becomming a main sequence star, our sun would have been a protostar. A protostar is where there is a large gathering of contracting gas. Matter falls into a central condensation, when the surrounding gas/dust envelope disperses and the accretion process stops, the star moves towards becoming a main sequence star.
What is a star is a baby what is it called?
A star is often referred to as a "protostar" during its early formation stage. This occurs when gas and dust in a molecular cloud collapse under gravity, leading to the accumulation of material that heats up and begins to form a new star. As the protostar continues to gather mass and temperature rises, it eventually reaches the point of nuclear fusion, at which point it becomes a main-sequence star.
What will a high mass protostar turn into?
A high mass protostar will eventually evolve into a massive star like a red supergiant, followed by a supernova explosion. After the supernova event, the remnants may form a neutron star or a black hole.
What comes first a Nebula or a protostar?
A nebula comes first; it is a large cloud of gas and dust in space. Under the influence of gravity, regions within the nebula can collapse to form a protostar. As the material falls inward, the protostar heats up and begins the process of nuclear fusion, eventually leading to the formation of a star.
What happens to the surface temperature and luminosity when gravity first assembles a protostar from a collapsing cloud?
As gravity collapses the cloud to form a protostar, the temperature and luminosity both increase. The increase in temperature is due to the compression of material, causing the protostar to heat up as energy is released. The increase in luminosity is a result of the protostar radiating this energy.
