Star A and Star B are both on the main sequence. Star A is 63 times more luminous than Star B. What is the ratio of their main-sequence lifetimes? (Hint: Refer to the M. M. stellar life expectancies equation, t, = %3D M.3.5 M.25-) ta

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Q: With a pair of binoculars, the faintest stars that you can see have an apparent magnitude of…

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Q: erstanding the Mass- Luminosity Relation How do we make sense of stellar lifetimes? Mo t(yr) 0.08 1…

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A: Hypernova is the type of phenomenon that happens when a massive star collapses into this and results…

Q: A star has a temperature T = 15000K, mass M = 0.25M⊙ and luminosity L = 0.02L⊙. Sketch the position…

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Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…

A: L/Lo = (M/Mo )3.5  here the luminosity is to be found in terms of Lo  M = 4Mo

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Q: Put the steps of the life cycle of a star in order.

A: Required :  Steps involved in star cycle.

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A: Required :  Spectral type, absolute magnitude, temperature and luminosity of star E.

Q: Describe the forces acting on a star during the main sequence period of its life?

A: A star has its gravity, and due to the hot core of a star, it creates pressure within the gas. Two…

Q: An M dwarf star of mass 0.1 solar masses, a radius of 0.13 solar radii and a photospheric…

A: Mass of M dwarf star, m = 0.1x solar mass M Radius of M dwarf star, r= 0.13 solar radii R  The…

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: Suppose a protostar has a luminosity of 157,341 Lo and a surface temperature of 4,540 K (Kelvins).…

A: Given: Luminoscity of protostar,  157341 LS Surface temperature of protostar, 4540 K Surface…

Q: A 2-solar-mass star on the main sequence would have a luminosity of approximately ____________ solar…

A: Given A 2-solar-mass star on the main sequence would have a luminosity of approximately, as…

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A: Write down the values using suitable variables. Here, c signifies the speed of light in a vacuum.

Q: True or False 8. Almost all stars are in binary systems. The book says: "So far you have been…

A: The statement: All stars are in binary systems. The book says: "So far you have been considering the…

Q: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…

A: Two stars in the same system might evolve at a different pace, depending on their distances in the…

Q: White dwarfs have a temperature of 100×103 K. Calculate the maximum wavelength of a White dwarf.

A: A white dwarf is a stellar core remnant that is highly dense and made of electron-degenerate matter.…

Q: If the surface Temperature of a star was about 11000.0 K instead of 7000.0 K what is the ratio of…

A: Given , temperature of the star is 11000 K instead of 7000 K How many times greater is the magnitude…

Q: Main sequence star A is 5 times as massive as main sequence star B. How do the main sequence…

A: Main sequence stars are those which fuse hydrogen atoms in their core to form helium. They have a…

Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…

A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…

Q: Consider two stars on the main sequence, A and B. Star A has a mass of 9. Мо Star B has a mass of…

A: Solution attached in the photo

Q: What is the mass of a star with a main-sequence lifetime of 4 billion years? 17 X solar masses

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Q: Draw an H-R diagram and dot the following question options on the diagram (using the letters given…

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Q: On a H-R diagram for main sequence stars, as temperature increases, brightness usually increases…

A: Required: Variation of brighness with  temperature in HR diagram.

Q: Use the Luminosity Distance Formula. Find the distance to a star (L=2.2x1026 watts) whose apparent…

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Q: You've just discovered a new X-ray binary, which we will call Hyp-X1 ("Hyp" for hypothetical). The…

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Q: Which of the following is least reasonable regarding stars on a Hertzsprung-Russell diagram?…

A: The Hertzsprung-Russell (H-R) diagram is a scatter plot of stars showing the relationship between…

Q: You discover a binary star system in which one member is a 15 solar-mass main-sequence star and the…

A: Required : The correct option.

Q: On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the…

A: We need to investigate where we find the largest main sequence stars in the H-R diagram.

Q: Draw a figure of the growth rate of a star in the unit of ?⊙/yr as a function of the temperature of…

A: As we know that the unit growth rate is equal to M⊙yr Here, M⊙ is the mass of the sun and we have…

Q: In a star of 1 solar mass (M☉), the core hydrogen burning phase, also known as the main sequence…

A: In the field of stellar evolution, there is a principle that the lifetime of a star on the main…

Q: The flux received at the Earth from Supernova 1885 was 3.0182 x 10 10 W/m?. The luminosity of the…

A: flux (I) = 3.0182×10-10 Wm2luminosity = 6×109 solar luminosities

Q: The main-sequence age of a star of 1M⊙ is about 1010 years. What is the main-sequence age of a star…

A: Answer the following question is

Q: A star with spectral type A0 has a surface temperature of 9600 K and a radius of 2.2 RSun. How many…

A: Given: Tstar = 9600 KRstar =2.2 RsunTsun=5778 KMstar = 3.3 Msun

Q: Question 32 Consider three Main Sequence stars, an O star, an F star and a K star, each with an…

A: Question 32: Among O star, F star, and K star each with a magnitude of 2 . which one is most…

Q: Why is it that we can describe the life cycle of a star and be confident about it?

A: It is required to describe how we can get an idea about the life cycle of a star.

Q: yades Cluster Age. This chapter states that the Hyades cluster is 650 million years old. What is the…

A: Given: This chapter states that the Hyades cluster is 650 million years old.  Introduction: What we…

Q: does the H-R diagram show? Explain the main sequence of stars.

A: The H-R diagram is Hertzsprung- Russell Diagram, it is a graph in which absolute magnitude of stars…

Q: Shown are three main sequence stars. Each one is a different size, but the color is not shown. Rank…

A: Given in the question are 3 main sequence stars. Each one has a different size. We need to rank them…

Q: What is the life expectancy (in years) of a 10 M⊙ main-sequence star? What is the life expectancy…

A: Required : The life expectancy of stars.

Q: A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES…

A: Given information: The mass of the star (m) = 25M⊙ The luminosity of the star (L) = 80000L⊙ part a):…

Q: If an X-ray binary consists of a 16 solar mass star and a neutron Star orbiting each other every…

A: Kepler’s third law for binary stars