If a typical halo star has an orbital velocity of 250 km/s, how long does it take to pass through the disk of the galaxy? Assume that the disk is 1000 pc thick.
Q: Suppose that the outer stars of a galaxy have an orbital velocity of 150 km/s. If the radius of the…
A: Given data: rgalaxy=4 kpcv=150 km/s Need to determine the orbital period of the outer stars.
Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…
A: Given, The distance of the star from the center of the galaxy: r=19 kpc=19×3.086×1019 m Speed of the…
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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
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A: Given, Velocity of star,vS=200km/s=200×103m/sRadius of star,RS=9 kpc=9×3.086×1019mVelocity of…
Q: If a circular accretion disk around a 1.4 M neutron Star has a radius of 5.00 x 10^5 km as measured…
A: Orbital velocity
Q: If a galaxy contains a supernova that at its brightest has an apparent magnitude of +15, how far…
A: Given The apparent magnitude of the supernova, mv =+15The absolute magnitude of the supernova, Mv…
Q: random times over the last 1010 years. The rate of star formation is simply the number of stars…
A: Number of stars in our milky Way galaxy is N=9×1010 Time taken in the formation of a plane
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A: To calculate the distance of the distant galaxies in megaparsecs (Mpc) Hubble’s law is used. If the…
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 a galaxy has an apparent radial velocity of 4000 km/s and the Hubble constant is 70 km/s/Mpc, how…
A: Hubble's law states that galaxies move away from Earth with a velocity proportional to their…
Q: If the active core of a galaxy contains a black hole of 106 M, what will the orbital period be for…
A: The expression for the orbital period, T=2πrv =2πrGMr =2πr32GM
Q: Spiral Galaxy with 3 differences each and 2 similarities.
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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: Suppose that a galaxy has 109 M⊙ of neutral HI gas with a temperature of about 10 K. Estimate the…
A: Given Data: The mass of the galaxy is, M = 109 M Temperature about 10k The luminosity of the 21cm…
Q: If the active core of a galaxy contains a black hole of 10° Mo, what will the orbital period be for…
A: This problem can be solved using the formula for circular velocity and then dividing the distance by…
Q: Suppose you observe a star orbiting the galactic center at a speed of 1100 km/s in a circular orbit…
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Q: Observations of quasars have shown us that many are extremely _________, emitting more energy than…
A: Required : Fill in the gaps.
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A: Stars create elements inside them through fusion. These will get slowly ejected as the star die.…
Q: If a galaxy is 8.9 Mpc away from Earth and recedes at 510 km/s, what is H0 (in km/s/Mpc)?
A: The Hubble constant can be calculated by v=H0d Where v is velocity in km/s Ho is Hubble constant in…
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…
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A: The equation for the radial velocity of the galaxy is,
Q: If active core of a galaxy contains a black hole of 10^6 M, what will the orbital period be for…
A:
Q: If you find a galaxy that is the same size and mass as our Milky Way Galaxy, what orbital velocity…
A: Mass of our galaxy (M1): 4.0 X 1011 M Semi-major axis of the orbit (a): 51 kpc
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Q: If a galaxy is 100,000,000 parces away and has absolute magnitude of -20.0 what is the galaxies…
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Q: alaxy? Explain.
A: Given: To explain the how astronomers find the distance of the galaxy is given as,
Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…
A:
Q: If a galaxy is 8.8 Mpc away from Earth and recedes at 498 km/s, what is H0 (in km/s/Mpc)? _______…
A: The required value of Hubble’s constant is, The required value of Hubble time is,
Q: A star at a distance of 50000 light years from the center of a galaxy has an orbital speed of 100…
A: Distance of the star from the center of the galaxy, r = 50000 ly The orbital speed of the star, v =…
Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…
A: Given, Distance, R=19kpcR=19×3.08×1019mR=58.52×1019m Speed, v=382×103m/s The velocity of the star is…
Q: If a planet was located approximately 32 thousand light-years from the center of a galaxy and orbits…
A: The distance of planet is 32 thousand light years from center of galaxy and its time period is 313…
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A: Let m be defined as the mass of the sun, and M be defined as the mass of the galaxy. Since the sun…
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A: Given information: Point B is twice as far from the center of the galaxy as point A. Let "ra" be the…
Q: how far away is the galaxy
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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: Suppose there exists a hypothetical galaxy with mass MG around the center of which a solar system…
A: Given, Mass of Galaxy = 1× 10 40 kg Mass of solar system = 2× 1028 kg Radius = 2.5 × 1020 m We need…
Q: The gas in the outer region of the Andromeda galaxy is found to be orbiting the galaxy with a…
A: Given Velocity of gas = u = 250 km/s = 250000 m/s Radius of orbit from the center = r = 35kpc = 35 ×…
Q: A galaxy at redshift z has an infrared luminosity of LIR. What is the approximate star formation…
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Q: The HI intensity vs. velocity curve for a disk galaxy has a width W = 400 kms ¹. This galaxy has a…
A: width W=400 km s-1 Pitch angle θ=20o luminosity =7% mass to light =2.5
Q: The surface brightness profiles of elliptical galaxies follow the Sersic formula with n = 4. How…
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Q: You find a small satellite galaxy orbiting 66 kpc from the center of a larger galaxy at a speed of…
A: Given data: Radius of the galaxy r=66 kpc. Velocity of satellite v=210 km/s. According to Kepler's…
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