What is the lifetime of a 10 solar mass star?

20 million years
Lifespans for main sequence stars have a vast range. Whilst our Sun will spend 10 billion years on the main sequence, a high-mass, ten solar-mass (10MSun) star will only last 20 million years (2.0× 107 years) on the main sequence. A star with a only half the mass of Sun can spend 80 billion years on the main sequence.

How do you find the lifetime of a star with solar mass?

The more mass a star has, the lower its life expectancy. The formula for the calculation is: lifespan of the star = lifespan of the sun * (star mass / solar mass) -2.5. The lifespan of the sun is estimated as 10 billion years.

Which stars have the longest lifetime on the H-R diagram?

The stars with the longest lifetimes are red dwarfs; some may be nearly as old as the universe itself.

  • Red Dwarf Stars. Astronomers define a red dwarf as a star having between about 0.08 and 0.5 times the mass of the sun and formed primarily of hydrogen gas.
  • Luminosity and Lifetime.
  • Nuclear Fusion.
  • Life Cycle of Stars.

Does the H-R diagram show the life cycle of stars?

More importantly they are also used to place stars into an evolutionary sequence which describes their formation, life and death. A widely used classification diagram for stars is the Hertzsprung-Russell Diagram (the H-R diagram) which is a plot of luminosity vs effective surface temperature.

How do you measure a star’s lifespan?

The lifetime of a star is proportional to the amount of fuel it has (its mass) divided by the rate at which it expends the fuel (its luminosity). Therefore, you can estimate the lifetime t to be proportional to M/L.

What is the lifetime of a 0.1 solar mass star on the main sequence?

about 10^12 years
More massive stars are much more luminous than the Sun (mass-luminosity relation) and so have much shorter lifetimes (about 30 million years for a 10 solar mass star), and less massive stars are very long lived (about 10^12 years for a 0.1 solar mass star).

How do you determine the lifetime of a star?

How do we know the lifetime of a star?

The overall lifespan of a star is determined by its mass. Since stars spend roughly 90% of their lives burning hydrogen into helium on the main sequence (MS), their ‘main sequence lifetime’ is also determined by their mass.

Which star lives longer low mass or high mass?

The more fuel, the more supply of material for fusion the star has and so the longer the star can live. The fuel is hydrogen atoms and the number of hydrogen atoms is greater in high mass stars than it is in lower mass stars. Thus, the higher the mass of the star, the longer its lifetime can be.

Which of the following stars will live longest?

Which of the following stars will live longest? -The lowest mass star lives longest. -These stars are massive enough that they will die in supernova explosions. You just studied 21 terms!

How is the lifetime of a star related to its mass?

Massive stars are short-lived. A star’s mass gives a measure of the amount of “fuel”, and its luminosity gives a measure of the rate at which this “fuel” is consumed by nuclear burning, so a star’s lifetime is proportional to its Mass divided by its Luminosity.

Which stars on the HR diagram have the shortest lifespan?

The life span of stars ranges from about 10 million years for the blue giants to about 100 billion years for the red dwarfs. The most common type of star is the red dwarf (lower right); the least common type is the blue giant (upper left).