envanyatar said:How can you point out a PMS star from a main sequence star?
envanyatar said:How can you point out a PMS star from a main sequence star?
The process of star formation begins with a large cloud of gas and dust, typically found in interstellar space. These clouds are called molecular clouds and they can span hundreds of light-years. As gravity pulls the gas and dust together, it begins to contract and heat up. Eventually, the center becomes hot enough to ignite nuclear fusion and a star is born.
The time it takes for a star to form can vary depending on its mass. Smaller stars, like our sun, can take anywhere from 50 million to 100 million years to form. Larger stars, on the other hand, can form in just a few million years. This process can also be affected by external factors, such as nearby supernovae or the presence of a nearby star.
The type of star that is formed is determined by several factors, including the mass of the cloud, the amount of gas and dust in the cloud, and the rate of star formation. The mass of the cloud is particularly important, as it determines how much of the gas and dust can be pulled together to form a star. The rate of star formation can also affect the type of star, as it can determine how much gas and dust is available for each star to form.
Yes, stars can form in different shapes depending on the conditions and environment in which they form. The most common shape for stars is spherical, but they can also form into elongated or flattened shapes. This is often due to the rotation of the gas and dust cloud, which can affect the shape of the star as it forms.
Scientists study star formation through various methods, including observations using telescopes, computer simulations, and laboratory experiments. Telescopes allow scientists to observe young stars and their surrounding gas and dust clouds, while computer simulations and laboratory experiments can help them understand the physical processes that occur during star formation.