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Professor
Ross
JudyNo, a protostar typically evolves into a main sequence star within a few million years. The early stages of a protostar involve gravitational collapse and the conversion of gravitational potential energy into heat and light. Once nuclear fusion ignites in the core, the star enters the main sequence phase and can shine for billions of years.
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Why does the temperature of a protostar increase?
The temperature of a protostar increases due to gravitational contraction. As the protostar contracts, potential energy is converted into kinetic energy, causing the particles to move faster and collide more frequently, resulting in an increase in temperature. This process eventually leads to the ignition of nuclear fusion and the star's main sequence phase.
During the t-tauri phase of a protostar, what changes occur in its structure and behavior?
During the T-Tauri phase of a protostar, it undergoes significant changes in its structure and behavior. The protostar becomes more stable and begins to generate its own energy through nuclear fusion. It also develops a strong magnetic field and may exhibit intense solar flares. Additionally, the protostar starts to clear out the surrounding gas and dust, paving the way for the formation of a planetary system.
When does a protostar become a star?
A protostar becomes a star when nuclear fusion begins in its core, primarily converting hydrogen into helium. This process generates the energy that allows the star to emit light and heat, officially making it a star.
What species absorbs photons in a protostar's outer layers?
In a protostar's outer layers, hydrogen atoms absorb photons. This process triggers nuclear fusion reactions that release energy and contribute to the protostar's growth and development into a stable star.
What is the time taken by a to orbit the sun is a?
more than a million years
