If a quasar is 1,980 times more luminous than an entire galaxy, what is the absolute magnitude of such a quasar? (Note: The absolute magnitude of the Milky Way Galaxy is about -21. Hint: Use the formula for magnitudes and flux ratios, me - ma = 2.5 logA)-

Q: The difference in absolute magnitude between two objects is related to their fluxes by the…

A: The difference in absolute magnitude between two objects is related to their fluxes by the…

Q: If a quasar is 1,240 times more luminous than an entire galaxy, what is the absolute magnitude of…

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Q: = 2. Using a Hubble constant of Ho 70 km/s/Mpc, find the distance to the galaxy cluster that moves…

A: Distance to the galaxy cluster is 92.8571 Mpc or 3.029×108light years. Explanation:Hubble's law…

Q: Let us assume that our galaxy consists of 2.5 × 1011 stars each of one solar mass. How long will a…

A: Mass of the galaxy is

Q: A given star orbits the center of its galaxy at an average speed of v_star, at a distance of r_star​…

A: Given, Velocity of star,vS=200km/s=200×103m/sRadius of star,RS=9 kpc=9×3.086×1019mVelocity of…

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: solar masses. (Hint: Use the formula for circular velocity, V. = VS"; make sure you convert relevant…

A: Given Data: The orbital velocity of a globular cluster is, ve=417 km/s The distance from the centre…

Q: If a galaxy contains a supernova that at its brightest has an apparent magnitude of +15, how far…

A: The magnitude-distance formula be defined as, d=10mV-MV+55 Where, MV be defined as the absolute…

Q: If the active core of a galaxy contains a black hole of 10°M, (1 million solar masses), what will…

A: mass of black hole, M=106 MΘ=106*2*1030=2*1036 Kg radius of orbit,r=0.33 Au=0.33*1.5*1011=0.495*1011…

Q: Among the globular clusters orbiting a distant galaxy, one is moving at 534 km/s and is located 14…

A: Given data: Speed of the globular clusters around the galaxy is, v= 534 km/s= 534000 m/s Distance of…

Q: If the active core of a galaxy contains a black hole of 106 Me, what will the orbital period be for…

A:

Q: The Kormendy relation for ellipticals can be written as He = 20.2 + 3.0 log R. where Re is the…

A: The kormendy relation for elipticals can be written asμe   =    20.2   +  3.0  logReμe   -    20.2…

Q: The density of Sirius B is 2×106 g/cm3 and its mass is 1.95×1030 kg. What is the radius of the white…

A: The given data are: ρ=2×106 g/cm3=2×109 kg/m3m=1.95×1030 kg Here, ρ and m represent the density and…

Q: Our galaxy is approximately 100,000 light years in diameter and 2,000 light years thick through the…

A:

Q: Consider that the absolute luminosity of the disk of the Milky Way, in the blue band, is L_B=…

A: Given The total luminosity of the galaxy                  = 2.3×1010 LB Sun The absolute magnitude…

Q: The disk of the Milky Way galaxy contains roughly 200 billion (1 billion = 109 ) stars. The disk is…

A: The milky way galaxy consists of a disk of about 100000 ly diameter and a thickness of about 1000 ly…

Q: If a galaxy contains a supernova that at its brightest has an apparent magnitude of +12, how far…

A: Given:The apparent magnitude of the supernova,mv=12Theabsolute magnitude of the supernova,Mv=-17Find…

Q: If a galaxy is 100,000,000 parces away and has absolute magnitude of -20.0 what is the galaxies…

A:

Q: alaxy? Explain.

A: Given: To explain the how astronomers find the distance of the galaxy is given as,

Q: Suppose you want to observe the molecular gas in a galaxy with redshift z using the rotational…

A: Suppose you want to observe the molecular gas in a galaxy with redshift z using the rotational…

Q: The surface brightness profiles of spiral galaxy disks follow the Sersic formula with n = 1. How…

A:

Q: Use this table of magnitudes to determine the following. (a) What is the ratio of the distance to…

A: According to question this is given that Diameter of the Milky Way galaxy dMW=1021meters approx…

Q: Assume that an average globular cluster is 25 pc in diameter. If you observe a galaxy that contains…

A: For the small angle, the approximation is,  sin θ≅ tan θ ≅ θIf the angle θ is expressed in…

Q: For a circular velocity profile of the type (r) = ar¹ ar1/9, where a is a constant and r is the…

A:

Q: In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble…

A: Given:  one image of hubble ultra deep field is roughly 10 square arcminutes.  Number of galaxies in…

Q: Given an image of a disk galaxy, you have measured that the average surface brightness at two radii…

A: Given that,  The disk surface brightness profile has the exponential form of,  I(R) = e^(–R/Rd)…

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 is r=50kpc3.086×1019m1kpc=154.3×1019m. Velocity of…

Q: If a quasar is 1,640 times more luminous than an entire galaxy, what is the absolute magnitude of…

A:

Q: If Hubble's constant is taken to be 70 and a quasar is found to have a radial s Mpc' velocity equal…

A: Given:   speed of light in vacuum is  = 3.0×105  km/second   c = 3.0×105  km/second Hubble’s…

Q: If a quasar is 2,000 times more luminous than an entire galaxy, what is the absolute magnitude of…

A: Relation between absolute magnitude and luminosity M1-M2=-2.5log10L1L2M2=M1+2.5log10L1L2

Q: If a galaxy contains a supernova that at its brightest has an apparent magnitude of 16, how far away…

A: Apparent magnitude: mV = 16 Absolute magnitude: MV = -18