erstanding the Mass- Luminosity Relation How do we make sense of stellar lifetimes? Mo t(yr) 0.08 1 40 >1x1012 1x1010 3x106 150 3x106

Q: Use the Schwarzchild formula, Rs = 2GM/c2 , where Rs = Radius of the star, in meters, that would…

A:

Q: 3) indicate which locations in the H-R diagram correspond to places where the evolution is slow.…

A: Using the H-R diagram shown the places where the evoultion has been slow is identified.

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: An astronomical image shows two objects that have the same apparent magnitude, i.e., the same…

A: Let the luminosity of the star is Ls= LoLuminosity of  Milky Way galaxy, Lm=1011LoLuminosity of…

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: 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: Which of the following is least reasonable regarding the mass of stars? Group of answer choices…

A: Stars are of different sizes and they have their own set of characteristics based on multiple…

Q: 1. The relative velocities of four stars are shown in the figure below with arrows. If an astronomer…

A: Redshift of a light spectra is the phenomenon when we observe an increase in the wavelength and…

Q: What are the a) luminosity and b)wavelength of maximum emission for a star with a surface…

A: Given data Temperature of the star, T=2000 K radius of the star, R=108 m

Q: The CMB contains roughly 400 million photons per m³. The energy of each photon depends on its…

A: The wavelength is 0.0011 m. The energy of a photon is 1.807×10-22 J.

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: What is the orbital period (in s) of a bit of matter in an accretion disk that is located 6 ✕ 105 km…

A: Write the given values with the suitable variables. r=6×105 km=6×108 mM=99Mo=992×1030 kg=198×1030 kg…

Q: The Andromeda Galaxy, M31, is the closest large spiral galaxy to our Milky Way. When we look at its…

A: a) Actual wavelength of Hα line is  λactual=656.28 nm observed wavelength λobs=655  nm.

Q: The stars in a binary system are a 4 MO main sequence star and a 1 MO red giant. Explain why this…

A: A binary star system is formed when two stars come close enough to form an orbit around its…

Q: a) (Palen, et. al., 2nd, Problem 45) Rigel has a Hipparcos parallax of 0.00412 arcsec. Given Rigel…

A: Rigel and Betelgeuse are located in the constellation of Orion, which are about 864.3 and 642.5…

Q: Q1 (ints): A0620–00 is an X-ray binary system, there is a normal star and a compact object. For the…

A: A binary system in astronomy consists of two astronomical objects two stars or a star and an…

Q: A 1.4 M. neutron star and a 0.5 M. white dwarf have been found orbiting each other with a period of…

A: The given formula works only if we put quantities in the units given, solar mass, years and…

Q: Stars of the same spectral type have the same: absolute magnitude number temperature luminosity

A: two stars with identical spectra have the same intrinsic luminosity

Q: Choose the statements that correctly describe the characteristics of the stars located in the…

A: Option-E is the correct option.

Q: Given two stars in a binary star a total distance of 16 AU apart and an orbital period of 4 years…

A: Two Masses in the universe attract each other by a gravitational force. This force is directly…

Q: Imagine that you are observing the light from a distant star that is located in a galaxy 100 million…

A: Distance from star to earth d=100 million lightyears. Upon receiving light from this star we are…

Q: Using solar units, we find that a star has 4 times the luminosity of the Sun, a mass 1.25 times the…

A: Let Lo is the luminosity of the sun and Mo is the mass of the sun So from the question, the…

Q: Why does lower mass star live longer that a higher mass star

A: Lower mass star is those stars which have more number of a hydrogen atom in themselves as compared…

Q: Find the speed for a star in which this line appears at wavelength 120.5 nmnm. Express your answer…

A: Given: Wavelength λ = 120.5 nm or 1.205×10-7 m To determine: speed of a star Formula used: v=λc here…

Q: Calculate the redshift of a star if H-ß line of hydrogen from the star is observed to be 800 nm.

A: Redshift happens when the source is moving away from the observer. This will make the observed…

Q: Question A4 a) A star has a temperature T = 15000K, mass M = 0.25M and luminosity L = 0.02L. Sketch…

A: **4.4.A circular clarifier has a diameter of 60 ft. If the primary effluent flow is 2 MGD, what is…

Q: RR Lyrae stars have essentially the same luminosity curve, with periods of up to 1 day.     False…

A: RR Lyrae stars have essentially same luminousity curve, with periods very less than 1 day.

Q: (Answer don't copy with hand written please)As a star runs out of hydrogen to fuel nuclear fusion in…

A: The luminosity of a star is given by the equation L=σAT4σ is the Stefan-Boltzmann constantA is the…