What are the two possibilities for the final state of a close, massive binary system?
Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
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Q: Why is it possible for repeated nova explosions to occur in the same binary system?
A: A binary star system is one in which two stars are bound to each other through gravity. They will…
Q: Describe the evolution of a very low mass start a red dwarf, birth to death
A: Answer Low mass stars in their dating stages shed their outer layers transfer most of their mass…
Q: Which of the following statements about Supernova 1987A is FALSE? a. it exploded relatively close…
A: Supernova is a cosmological event. When a star reaches to its end time of it's life, then it gets…
Q: If the main-sequence mass lower limit is 0.08 solar mass and the brightest main-sequence stars are 1…
A: The Main Sequence Stars are a mass sequence, with low mass stars forming an equilibrium with a cool…
Q: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: where do hydrogen-buring stars spend most of their time on the H-R Diagram? Is it the main sequence,…
A: Hydrogen burning stars are those stars which burns hydrogen as their dominant fuel. Horizontal…
Q: For a main sequence star with luminosity L, how many kilograms of hydrogen is being converted into…
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Q: If the accretion disk around a neutron star has a radius of 2 × 105 km, what is the orbital velocity…
A: Neutron stars are formed when massive stars collapse under their own gravity. They are very…
Q: the book's example of the Schwarzchild radius of the supermassive black hole Sag A* with a mass of…
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Q: A star is transited by a planet. From the measured period T and the transit duration t alone, show…
A: From Kepler’s law,
Q: fill in missing word a) One difference between a type I and type II supernova is the formation of…
A: Few sentences are given and we need to fill in the blanks.
Q: Observations indicate that each galaxy contains a supermassive black hole at its center. These black…
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Q: Q7// a- Estimate the density of a white dwarf if it has a solar mass packed into a sphere with…
A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…
Q: Question A1 a) The Large Magellanic Cloud (LMC) is a galaxy in the vicinity of the Milky Way. It is…
A: Solution/Calculation: a) The Large Magellanic Cloud (LMC) is a galaxy in the vicinity of the Milky…
Q: The chemical abundance of population I stars a. indicates that they were formed before the…
A: Population I star consist of sun and tend to be hot, young, luminous and focused in the spiral…
Q: If the accretion disk around a neutron star has a radius of 8 ✕ 105 km, what is the orbital velocity…
A: Given Data: The radius of the neutron star is r = 8 x 105 km. As we know that the mass of the…
Q: If the two stars orbit in a such a way that the big star is 4 AU from the center of the mass and the…
A: Given:distance of larger star from COM, ra = 4 AUdistance of smaller star from COM, rb = 12 AUtotal…
Q: What is the luminosity, in solar units, of a brown dwarf whose radius is 0.1 solar radii and whose…
A: Luminosity of a star or an object is the total amount of energy radiated per second by that object.…
Q: If a white dwarf in a close binary accretes matter from its companion star, which of the following…
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Q: How is the turnoff point on the H-R diagram of a cluster related to the cluster’s age?
A: Given:- The turnoff point on the H-R diagram of a cluster related to the cluster’s age Explain:- How…
Q: How is the shape of a black hole, the material around it, and the release of high-powered jets…
A: Question : How is the shape of a black hole, the material around it, and the release of…
Q: In a nova, why is the shell of hydrogen on the white dwarf consumed explosively rather than…
A: White stars are formed when stars that do not have enough mass to form neutron stars or black holes…
Q: Consider two different clusters with approximately the same turnoff luminosity. Cluster A has a main…
A: Given two clusters A and B on the H-R diagram (which is a plot between the luminosity and…
Q: 2. (a) Find the virial mass of a cluster for which the rms radial velocity dispersion is 5 km/s and…
A: Because of how clusters are prepared, they remain as tiny particles in the course of an experiment…
Q: If the accretion disk around a neutron star has a radius of 8 ✕ 105 km, what is the orbital velocity…
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Q: Globular clusters contain no stars more massive than the Sun. Which of the following seems like the…
A: First, we are aware that no stars more massive than the Sun can be found in globular clusters. Any…
Q: Assume that you observe both of these stars in a galaxy 10 million light-years away. How bright is…
A: 1) Distance of both stats from observer, d = 10 million light years d = 10 x 106 ly d = 107 ly 1…
Q: What stops the production of energy in the evolution of a high mass star?
A: Required: We need to find what stops the production of energy in the evolution of a high mass star.…
Q: What is the total mass of a visual binary system if the average separation of the stars is 8 AU and…
A: A binary system is formed when two astronomical objects come close enough to start orbiting each…
Q: What is the escape velocity (in km/s) from the surface of a 1.5 M neutron star? From a 3.0 M neutron…
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Q: A 1.8 M neutron and a 0.7 M white dwarf have been found orbiting each other with a period of 28…
A: Kepler’s third law for binary stars
Q: Calculate the Kepler speed grazing the surface of a) a white dwarf, b) a neutron star. Give your…
A: Concept: To determine the Kepler Speed we need to calculate the escape velocity. The Formula to…
Q: We learned in class that, when stars collapse under their own gravity, they conserve angular…
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Q: The Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation…
A: Given: Distance of galactic center of Milky way r = 50 kpc r=50kpc3.086×1019m1kpc=154.3×1019m.…
Q: If the radius of the neutron star is 85.074 km, what is the average density of a neutron star that…
A: To Find : density of neutron star
Q: 4. What is the upper limit of a brown dwarf’s size? a. no upper limit b. 0.50 solar masses c. 0.10…
A: What is the upper limit of a brown dwarf’s size.
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: How large is our supermassive black hole in terms of the size of the Earth’s orbit? (Divide the…
A: The Schwarzschild equation for the radius of the event horizon around a black hole is given by the…
Q: why are Cepheid variable stars good distance indicators? What about supernovae?
A: Named after delta-Cephei, Cepheid Variables are the most important type of variable because it has…
Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…
A: Given,mass =4M⊙ Note: We’ll answer the first question since the exact one wasn’t specified. Please…
Q: What is the size of a typical white dwarf? Group of answer choices 1.0 solar radii 0.5 solar…
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