Stellar Evolution: Life Cycle of Stars
Keywords:
Stellar Nebula. Red Super Giant, Black hole, Red Giant, Interstellar medium, Planetary Nebula, White Dwarf, Protostars, Massive star, Supernova, Neutron star, Main sequenceAbstract
The origin of our universe is one of the biggest mysteries to date. There are numerous theories that point towards the ‘Big Bang’ to being the origin. But still, no experiments proved the Big bang theory. But what we can do to study the origin of the universe is by going backward in time and questioning ‘How did the universe begin to evolve?’, ‘What processes gave rise to the present universe?’, etc. And one of such questions is ‘How are the stars formed? ’. By knowing how stars are born, and their processes, we can say what were the initial conditions of the universe and draw conclusions on its origin. In our present paper, we have studied the chronology of our universe according to inflationary cosmology, then how the interstellar gas clouds aggregated to form protostars. The study of stellar birth, requires nuclear physics to understand fusion, conditions for stellar birth, properties of a star like pressure, mass profile, temperature, luminosity, magnitude system, etc. We have also done analysis of the HR diagram, Main sequence stars, the life cycle of different mass categories of stars, and finally, Supernova remnants like Neutron stars and Black holes (Sagar J. C., 2021).
