How Do The Properties Of Long-Lived Stars Compare To Those Of Short-Lived Stars


How Do The Properties Of Long-lived Stars Compare To Those Of Short-lived Stars?

How do the properties of long-lived stars compare to those of short-lived stars? Long-lived stars begin their lives with less mass and a smaller amount of hydrogen fuel. Long-lived stars are less luminous during their main-sequence lives.

In what ways do the formative stages of high mass stars compare with those of Sun like stars?

In what ways do the formative stages of high-mass stars differ from those of stars like the sun? Higher mass stars tend to place higher on the H-R diagram. – They become O-type stars in about 1/50 of the time it took the Sun to become a star.

Why do small stars have longer lifetimes than large stars?

A smaller star has less fuel but its rate of fusion is not as fast. Therefore smaller stars live longer than larger stars because their rate of fuel consumption is not as rapid.

What would be the luminosity of the sun if its surface temperature were 3000 K and its radius were 1 AU?

What would be the luminosity of the Sun if its surface temperature were 3000 K and its radius were 7.0 AU ? 1 A.U. = 215 solar radii. L = 1505^2(3000/5800)^4 L = 1.7×10^5 solar luminosities.

What characteristic of a star cluster is used to determine its age quizlet?

Noting the turnoff mass in a star cluster allows you to determine its: age.

How does the life of a high mass star differ from a low mass star?

High mass stars use up their hydrogen fuel very rapidly and consequently have short lives. High mass stars pass through a Red Supergiant stage before dying catastrophically in supernovae explosions. … Low mass stars use up their hydrogen fuel very slowly and consequently have long lives.

How does the life and death of a high mass star differ from the life and death of a low mass star?

Both a low mass Star and a High mass Star will Start off with fusing hydrogen into Helium though a high mass Star will burn it faster because of increased pressure and temperature in the core. A second difference is the ability to create heavier elements.

Why do high mass main sequence stars have shorter lifetimes than those of lower mass?

This equation states that the larger the mass of the star the shorter the lifetime. This is because the fuel consumption gets huge for the more massive stars. Even if massive stars have more fuel the consume it at such intensely high rates that they don’t live as long as lower mass stars.

Why do average stars have longer?

Why do stars expand as they age? The fusion in a star’s core is mostly 2 Hydrogen atoms being turned into 1 Helium atom. But the mass of 1 Helium atom is slightly less than 2 Hydrogen. Over time stars lose mass and this causes their density to lower and thus their gravitational force to lower.

Which stars have the longest lives?

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

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How do stars luminosity compare with their radii?

are stars very bright or not very bright? … how do the stars’ radii compare with their mass? as the radius increases the luminosity would be brighter(direct relationship) as the radius of a star increases how do you think its luminosity might change?

How do you compare lumosity?

To figure out luminosity from absolute magnitude one must calculate that a difference of five on the absolute magnitude scale is equivalent to a factor of 100 on the luminosity scale — for instance a star with an absolute magnitude of 1 is 100 times as luminous as a star with an absolute magnitude of 6.

How does the sun’s luminosity compared to other stars?

In fact the sun is thought to be more luminous than 85% of the stars in our Milky Way galaxy. Yet most of these less luminous stars are too small and faint to see without an optical aid. Let’s presume a star has the same surface temperature as the sun but sports a larger radius.

What characteristic of star cluster is used to determine its age?

As a cluster ages the mass of the main-sequence turnoff stars decreases. By determining the mass of the main-sequence turnoff stars we get the age of the cluster. The cluster age equals the main-sequence lifetime of the turnoff stars.

What characteristic of a star cluster is used to determine its age group of answer choices?

“The stars in either type of star cluster were all formed at the same time and out of the same material. The essential feature of a star cluster that lets us estimate its age is that each cluster contains stars with a range of masses.

What causes different stars to evolve differently?

Gravity & Internal heat: balance that determines evolutionary stage of a star’s life.

What are 2 characteristics of high mass stars?

High-mass star characteristics include:
  • Very high-core temperatures.
  • Crushing stellar-core pressures.
  • Very big and very bright
  • Ends its stellar life with a bang.

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Are high mass or low mass stars more common?

Which is more common low mass stars or high mass stars? Low mass stars are far more common.

What happens in a high mass star?

High mass stars go through a similar process to low mass stars in the beginning except that it all happens much faster. … Then unlike low mass stars they have enough mass that gravity contracts the core raising the temperature and carbon can fuse into neon then neon into oxygen then oxygen into silicon then iron.

Do stars vary in mass How does this mass affect the life cycle of a star?

A star’s life cycle is determined by its mass. The larger its mass the shorter its life cycle. … When the hydrogen supply in the core begins to run out and the star is no longer generating heat by nuclear fusion the core becomes unstable and contracts.

How and why do large mass stars follow such dramatically different paths to their end in supernovae?

These stars are more massive than the cut off for going into Planetary Nebula stages so the death scenarios of the massive stars go down very different paths. … It is more massive so it can go through more burning stages than a low mass star.

How does mass influence how a star lives and dies?

Explanation: If the star has smaller mass than the Sun it can fuse hydrogen into helium for atleast a trillion years. The larger a star the shorter its life because it fuses hydrogen into helium much more quickly. A star whose mass is more than 20 Suns will run out of hydrogen in only a few hundred million years.

How long do small stars live?

It’s believed that the smaller red dwarf stars will live for 10 trillion years or more. How long do stars last? The biggest stars last only millions the medium-sized stars last billions and the smallest stars can last trillions of years.

Why do average stars have longer life spans and massive star?

A 5 solar mass star has only five times more hydrogen fuel than the Sun but (the star’s luminosity)/(the Sun’s luminosity) = (5/1)4 = 625! Its lifetime = 1/(5/1)(41) × 1010 years = (1/125) × 1010 years = 8.0 × 107 years. Some representative lifetimes for other stars are given in the table below.

What type of star has the shortest lifespan?

Massive Stars

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Supergiants have the shortest lifespans of any star as the temperatures in a supergiant’s core get so high that it is able to fuse the helium that is left over after hydrogen burning has stopped.

Which stars live the longest lives on the main sequence the shortest Why?

The most massive stars have the shortest lifetimes. Because they have most fuel they burn it so prodigously that their lifetimes are very short. A stars time on the main sequence varies from a few million to 2×1011.

Why do blue stars have short lives?

Blue or even blue/green stars are very hot up to 50 000ºC and are normally giant young stars which are very active or even ‘hyper-active’. They are all young because they don’t live very long. They live very active short lives and die young usually in a massive explosion called a Super Nova.

Which stars live longest quizlet?

Which stars live the longest? M-type stars (red dwarfs) live the longest because they consume their fuel so slowly. O and B-type stats exhaust their fuel and leave the main sequence in only a few million years.

How do the stars luminosity compare with their size and mass?

The luminosity and temperature of a main-sequence star are set by its mass. More massive means brighter and hotter. A ten solar mass star has about ten times the sun’s supply of nuclear energy. Its luminosity is 3000 times that of the sun.

What is a star’s luminosity quizlet?

luminosity- The luminosity of a star is the amount of light it emits from its surface. apparent brightness-how bright the star appears to a detector here on Earth. The difference between luminosity and apparent brightness depends on distance.

What is luminosity based on?

A star’s luminosity can be determined from two stellar characteristics: size and effective temperature. The former is typically represented in terms of solar radii R while the latter is represented in kelvins but in most cases neither can be measured directly.

Is lumosity really effective?

The FTC concluded that Lumos Labs’ advertisements – touting the ability of its Lumosity brain training program to improve consumers’ cognition boost their performance at school and work protect them against Alzheimer’s disease and help treat symptoms of ADHD – were not grounded in evidence.

How much does lumosity cost?

Lumosity is free to download on Android and iOS though upgrading to a premium subscription costs $11.99 per month or $59.99 for 1 year.

How does the Sun compare in luminosity to Giants?

It’s more than a hundred times more luminous. How does the radius of a red giant compare to the Sun? It’s 10-1000 times larger.

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