Calculate the luminosity of an 8 solar mass star.
Q: If an X-ray binary consists of a 17-solar-mass star and a neutron star orbiting each other every…
A: The expression for the Kepler’s third law is as follows: MA+MB=a3p2 1
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
Q: Determine the mean molecular mass of a star for both the scenario of being completely neutral and…
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Q: A pulsating variable star with a period of 10 days would be a Cepheid having an absolute magnitude…
A: Pulsating variable star are made by expansion and contractions in the outer layers of any stars. Due…
Q: As we have discussed, Sirius B in the Sirius binary system is a white dwarf with MB ∼ 1M , LB ∼…
A: Given that: The mass of Sirius B: MB ~ 1MThe luminosity of Sirius B: LB ~ 0.024LThe radius of Sirius…
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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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: What is the life expectancy of a 2-solar-mass star?
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Q: A newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a…
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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: If a neutron star has a radius of 9.12 km and a temperature of 3.63 x 106 K, how luminous is it in…
A: 1)Using stefan's lawP = σ A T4Where P is the power σ is the stefan's constant A is the area of…
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: What is the maximum luminosity for star of 5.76×1010 Msun.
A: In hydrostatic equilibrium, the radiation pressure and gravitational force will balance each other.…
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…
Q: A star had an apparent magnitude m = 2.1 and an absolute magnitude M = 1.6 1) Calculate the distance…
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Q: A star is observed to be thrice the size of the Sun with temperature of 1.3Tsun. Estimate its…
A: The energy radiated by a star is defined as its luminosity. Luminosity depends on the temperature…
Q: Find the wavelength of peak intensity for a hot 45000 K star that emits thermal radiation.
A: Given in question that Temperature of the object(T) = 45000 K.
Q: Type Ia Supernova is an example of a: a. Parallax object b. Moving cluster object c. Standard
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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: An O8 V star has an apparent magnitude of +2. Use the method of spectroscopic parallax to estimate…
A: The apparent magnitude m of the star is given to be m=+1. From HR absolute magnitude M of a star…
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: Vega has Mv = 0.5. How large is Mbol? Calculate the luminosity of Vega. Remember that Mbolo = 4.75.…
A: Given information": The absolute visible magnitude of Vega (Mv) = 0.5 The Spectral class of Vega is…
Q: A newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a…
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Q: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of the…
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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: A distant F0 star is 6.3 times less bright than a nearer F0 star which has a parallax of 0.2…
A: Given: p=0.2 arcsec The distance of the distant F0 star from the nearer F0 star is : d=1p=10.2=5…
Q: Find the wavelength of peak intensity for a hot 45000 K star that emits thermal radiation.
A: Given information:Temperature of the object (T) = 45000 K
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: What is the difference between type I and type II supernovae
A: To determine Difference between type I and type II supernovae
Q: If a T Tauri star is the same temperature as the sun but is ten times more luminous, what is its…
A: The energy radiated by a star per second is known as its luminosity and is directly proportional to…
Q: What did you calculate for the radius of the star that had a temperature of 5880 degrees Kelvin and…
A: Given : Temperature=T=5880∘ K Luminosity=L=78 W We have to calculate the value of radius R of the…
Q: The star G1710 is currently at a distance of 62 lightyears and has an apparent visual magnitude of…
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Q: What is the life expectancy of a 16-solar-mass star?
A: Stars are formed due to the gravitational collapse of interstellar gases which contain mostly…
Q: Calculate the size of a star if its surface temperature is 6000 K and has a power output of 5.6 x…
A: An ideal body capable of absorbing all the radiation that falls on it is considered a blackbody. The…
Q: What is the luminosity of a 4-solar-mass main-sequence star?
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
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: QUESTION 16 Use the figure shown below to complete the following statement: A low-mass protostar…
A: During the formation of a low-mass protostar, a protostar accumulates mass by accreting material…
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: A young recently formed planet has a surface temperature T = 2000 K and a radius of Rp Jupiter radii…
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Q: Imagine that you are an astronomer studying a star 4 parsecs away (a parsec is 3.09x1016 m). You…
A: Given that Distance of star from the telescope d = 4 parsecs. 1parsecs=3.09×1016m Incoming flux…
Q: Describe the spectra for a spectroscopic binary for a system comprised of an F-type and L-type star.…
A: Given Describe the spectra for a spectroscopic binary for a system comprised of an F-type and L-type…
Q: Finally estimate the lifetime of an M0 spectral type star if the total mass of the star is M =…
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Q: will take a moment to compare how brightly a white dwarf star shines compared to a red giant star.…
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