What is the life expectancy of a 2-solar-mass star?
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A: Given data Time period ,T=15 years=15×3.154×107 sec Radius, r=10 AU=1.496×1012 m
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A: Mass they formed with
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Q: of a star occur
A: Possible stages of a star that occurs are as follows:
Q: Calculate the expected life span of a 16 solar mass star
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A: Immediate Assistance : You cannot wait for help if you require quick aid. Because it also implies…
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Q: This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume…
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A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
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Q: A red giant loses a solar mass in 150,000 years via a superwind. After 0.9 million years, it has a…
A: Dear student, as per the Qn-+A guidelines I will answer the first question only. Please, ask the…
Q: Calculate the mass of a star having a diameter of 6E5 km and an average density of 1.5 g/cm3.…
A: We have : Density = masscolumeVolume of star = 43x π x r3Diameter of star = 6 x 105kmRadius of star…
Q: Calculate the luminosity of an 8 solar mass star.
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: What critical event must occur in order for a protostar to become a star?
A: A very young star that is yet gathering mass from the parent molecular cloud is called a protostar.…
Q: What would a dead star of 2.5 solar masses be?
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Q: Match the stars to their typical lifetimes on the main sequence. O Instructions 15 solar masses 1…
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Q: Why massive stars are short lived?
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Q: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…
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Q: What causes a star to move off the main sequence?
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Q: What is the luminosity of a star having three times the radius of the Sun and a surface temperature…
A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…
Q: What is the total mass of a visual binary system if the average separation of the stars is 8 AU and…
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Q: Consider three main sequence stars: Star A is 12000 K, Star B is 6000 K, Star C is 3000 K. What are…
A: Given, Star A = 12000 K temprature Star B = 6000 K temprature Star C = 3000 K temprature So the…
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Q: There are 200000 AU radius clouds will form a star of 10 solar masses and the 150000 AU radius…
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Q: Why does the orbital period of a binary star depend on its mass?
A: A binary system is formed when two massive astronomical objects start orbiting each other around a…
Q: Calculate the absolute magnitude of a star at a distance of 6 pc with an apparent magnitude of 3.
A: The apparent magnitude and absolute magnitude are two terms used to define the brightness of a star.…
Q: What is the life expectancy of a 16-solar-mass star?
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Q: planetary nebula expands at 38 km/s. How far will it expand (in km) in 3 million years?
A: Here given nebula is expanding with given speed. As in 1 sec nebula expands 38 Km, In 3 million…
Q: A planetary nebula expands at 32 km/s. How far will it expand (in km) in 0.6 million years?
A: Expansion rate of the Nebula: It can be defined as the distance up to which the nebula expands in a…
Q: What is the luminosity of a 4-solar-mass main-sequence star?
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Q: Sn1604 a supernova in the year 2000 the age then was 396 years calculate the speed of expansion of…
A: Sn1604 a supernova in the year 2000 the age then was 396 years.If Kepler’s supernova expanded ar…
Q: How massive have to be a main-sequence star in order to survive for at least 15 billion years?
A: The objective of this question is to determine the mass of a main-sequence star that would allow it…
Q: Why does a star's life expectancy depend on its mass?
A: Stars are formed due to the gravitational collapse of interstellar gas. This collapse is…
Q: describing the various stages in the life of a 1.0 solar mass star, 0.5 solar mass star, and a 3.0…
A: In this question we have to describe the life of a 0.5, 1.0 and 3.0 solar mass stars.
Q: What would a dead star of 1.1 solar masses be
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A: Answer the following question is
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Q: A star has a life expectancy of 5 billion years. What would be its mass?
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Q: How long can a 4-solar-mass star live?
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Q: The Orion Nebula is about 20 light-years (20 × 1018 cm) across, enclosing a roughly spherical area…
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- Calculate the mass of a star having a diameter of 6E5 km and an average density of 1.1 g/cm3We observe a star that is dstar away. How much extinction would there need to be (i.e., what must tau(τ) be) if we had ignored intervening dust, and concluded that it was actually 2*dstar away? Value: dstar = 850 pcConsider three main sequence stars: Star A is 14,500 K, Star B is 2,900 K, and Star C is 5,500 K. What are the colors of each of these stars?
- A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES MASS VANISH as H is fused to He in the star’s core? Note: When we say “mass vanish '' what we really mean is “gets converted into energy and leaves the star as light”. Note: approximate answer: 3.55 E14 kg/s b. At what rate is H converted into He? To do this you need to take into account that for every kg of hydrogen burned, only 0.7% gets converted into energy while the rest turns into helium. Approximate answer = 5E16 kg/s c. Assuming that only the 10% of the star’s mass in the central regions will get hot enough for fusion, calculate the main sequence lifetime of the star. Put your answer in years, and compare it to the lifetime of the Sun. It should be much, much shorter. Approximate answer: 30 million years.How many times hotter than our sun is the hottest type O star, which has a surface temperature 40,000 K? Number times hotter =Describe how energy generated in the core of a 1-solar-mass star gets to the star's surface.
- List the following 5 terms in order through a stars life cycle (starting with the sun), through the remainder of its lifetime: a. Black dwarf b. Planetary nebula c. Red giant d. Star (Sun) e. White dwarfA red giant that was originally a 9.5MSun main-sequence star loses a solar mass in 100,000 years via a superwind. What is this mass loss rate in units of solar masses per year? (the answer is not 0.000095 solar masses per year). Additionally, at this mass loss rate, what will the red giant's mass be after 0.5 million years? (Enter your answer as a multiple of MSun.)what is the mass of a star with a main- sequence lifetime of 3 billion years
- What evidence is there that star formation has occurred recently?What is the luminosity of a star having four times the radius of the Sun and a surface temperature of 8,000 K?What is the total mass of a visual binary system if the average separation of the stars is 7.1 AU and their orbital period is 12 years?