Table of Contents
What is the end phase of a massive star?
A massive star ends with a violent explosion called a supernova. The matter ejected in a supernova explosion becomes a glowing supernova remnant.
What is the final end point for the most massive stars?
Black hole is the fate of stars of more than 3 solar masses (after loss of mass in PN stage).
What is the evolution of a massive star?
Massive stars evolve in much the same way that the Sun does (but always more quickly)—up to the formation of a carbon-oxygen core. Also, when more massive stars become red giants, they become so bright and large that we call them supergiants.
What are the last two elements that a massive star produces?
They fuse helium until the core is largely carbon and oxygen. The most massive stars become supergiants when they leave the main sequence and quickly start helium fusion as they become red supergiants. After the helium is exhausted in the core of a star, it will continue in a shell around the carbon-oxygen core.
What are massive stars called?
On the other hand, the most massive stars, known as hypergiants, may be 100 or more times more massive than the Sun, and have surface temperatures of more than 30,000 K. Hypergiants emit hundreds of thousands of times more energy than the Sun, but have lifetimes of only a few million years.
What is the end product of stars?
A star of a few solar masses will ignite carbon fusion to form magnesium, neon, and smaller amounts of other elements, resulting in a white dwarf composed chiefly of oxygen, neon, and magnesium, provided that it can lose enough mass to get below the Chandrasekhar limit (see below), and provided that the ignition of …
Which of the above evolutionary stages of a massive star is called a supernova?
Stage 4 – The core collapses in less than a second, causing an explosion called a Supernova, in which a shock wave blows of the outer layers of the star.
How long does it take for a massive star to evolve?
Massive stars go through these stages very, very quickly. In really massive stars, some fusion stages toward the very end can take only months or even days! This is a far cry from the millions of years they spend in the main-sequence stage. At this stage of its evolution, a massive star resembles an onion with an iron core.
Which is the final stage of a star’s life?
For example, the star Antares is an M type supergiant. It has a luminosity 13,000 times that of the Sun. For low mass stars, this is the final stage of their lifetime in which they generate energy via fusion. Once the helium and hydrogen shell fusion uses up all of the available fuel, the star’s life is effectively over.
What kind of star evolves off the main sequence?
To the left a low-mass red dwarf, in the center a mid-sized yellow dwarf and at the right a massive blue-white main-sequence star. Eventually the star’s core exhausts its supply of hydrogen and the star begins to evolve off the main sequence.
What happens to low mass stars after the red giant phase?
After the red giant phase, low mass stars follow a different evolutionary path than more massive stars. For this reason, we are going to first consider what happens to low mass (less than 8 times the mass of the Sun) stars as they progress past the red giant phase.