Why do you think the Andromeda galaxy has four times the stars as the Milky Way, yet is only currently producing stars at roughly half the rate, i.e., 3 stars per year versus 7 stars per year?
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: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint:…
A:
Q: If a standard passenger aircraft can fly at 0.37 km/s (828 mph), how long (in yr) would it take to…
A:
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: If a standard passenger aircraft can fly at 0.27 km/s (604 mph), how long (in yr) would it take to…
A: The problem is based upon distance time relation. We know that distance is the length. For very…
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: 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: given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years)…
A: Given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years) =…
Q: why do you have to know the distance to a galaxy to find its mass?
A: The orbital motion of stars explains the masses of galaxies. The stars in a heavier galaxy exhibit…
Q: If a galaxy is 9.2 Mpc away from Earth and recedes at 475 km/s, what is H0 (in km/s/Mpc)?
A:
Q: If a globular cluster contains 1 million stars and is 25 pc in diameter, what is the average…
A: The diameter of the globular cluster is d= 25 pc. Number of stars contain by the open clusters n= 1…
Q: Astronomers estimate the mass of the stars in a certain galaxy to be about 3.040 kg, and the total…
A: It is given that the mass of the stars in a certain galaxy is ms=3.040 kg, and the total mass of 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 you find a galaxy that contains globular clusters that are 2" in diameter, how far away is the…
A: Given Data The diameter of cluster is:D=25 pc=7.714×1017 m The globular cluster is:θarcsecond=2…
Q: Stars formed after the Big Bang had cooled down. From globular cluster dating and from stellar…
A: All of the matter and energy in the universe was once confined to a singularity with infinite…
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: Assume that the number density of stars in the Milky Way is 0.14 pc-3. (e) There are 10" stars…
A: Given, Number density of star is, ρ = 0.14 pc-3 Total number of stars in galaxy, N=1011 Let d is the…
Q: The time for a galaxy to cross from one side of a cluster to the other is called the crossing time.…
A: We are given the velocity of galaxy. We are also given the diameter of cluster. This diameter is…
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: 8. If a galaxy has an apparent radial velocity of 2000 km/s and the Hubble constant is 72 km/s/Mpc,…
A: Using Hubble's law we can solve this
Q: If a globular cluster contains 2 million stars and is 30 pc in diameter, what is the average…
A: A Globular cluster is a cluster of old stars, only a few years younger than the Universe itself…
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: Milky Way galaxy has about 5 x 10° solar masses of gas in total. If 13 solar masses of that gas is…
A: Thousands of stars, dust particles, and gas fill the Milky Way. Observing it from the top or bottom…
Q: Another way of explaining a word is to enumerate the different parts of which it is made: “X…
A: The Solar system consists of our star, i.e. the Sun, and planets and heavenly bodies which are…
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: If a galaxy contains a supernova that at its brightest has an apparent magnitude of +21, how far…
A: Apparent magnitude mV = + 21 Absolute magnitude MV = - 17
Q: Pretend that galaxies are spaced evenly, 7.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…
A: The average density of matter in the universe is given by
Q: What is the magnitude of the merger of two galaxies which have the magnitudes m1 and m2?
A:
Q: You observe two randomly chosen stars 10,000 lightyears from Earth. One is in the disk of the Milky…
A: In this question we have to observe two randomly chosen stars 10,000 lightyears from Earth. One is…
Q: Globular clusters revolve around the Galaxy in highly elliptical orbits. Where would you expect the…
A: A globular cluster is densely packed group of stars bound together by gravity. These clusters are…
Q: Astronomers are studying the supermassive black hole (SMBH) of an AGN with a mass of 108 Mo. The…
A: Given : Red shift of SMBH = 0.05 Velocity of dispersion = 300 km/s…
Q: The RR Lyrae stars in a globular cluster have apparent magnitudes of 14. Assuming an absolute visual…
A: Given that the apparent magnitude mv=14 and the absolute visual magnitude Mv=0.5, substituting…
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: A supernova in a distant galaxy is observed to be having an absolute magnitude of -19 and an…
A: The distance to stars can be calculated from their apparent and absolute magnitudes. Apparent…
Why do you think the Andromeda galaxy has four times the stars as the Milky Way, yet is only currently producing stars at roughly half the rate, i.e., 3 stars per year versus 7 stars per year?
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)