If you assume that a globular cluster 2 arc minutes in diameter is actually 27 pc in diameter, how far away is it? (Hint: Use the small-angle formula.)
Q: If interstellar dust makes an RR Lyrae variable star look 7 magnitudes fainter than the star should,…
A:
Q: If a prostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar…
A:
Q: What would most bright nebulae look like if there were no interstellar dust?
A: A nebula is defined as a large region of interstellar clouds made of dust, hydrogen, helium, and…
Q: In the direction of a particular star cluster, interstellar extinction allows only 12% of a stars…
A: Given In the direction of a particular star cluster, interstellar extinction allows only 12% of a…
Q: If a contracting protostar is seven times the radius of the Sun and has a temperature of only 2030…
A: The luminosity (L) of the contracting protostar relative to the sun be defined as, LL⊙=RR⊙2TT⊙4…
Q: The Hydra super cluster is at a distance of about 800 MParsec. What is the recessional velocity?
A:
Q: How does a contracting protostar convert gravitational energy into thermal energy?
A: Stars are formed from clouds of gas present in the interstellar medium. Since the temperature is low…
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: If a giant molecular cloud is a distance of 27 pc away from Earth and drifts at a speed of 27 km/s…
A:
Q: If a giant molecular cloud is 73 pc in diameter and a shock wave can sweep through it at 9 million…
A: Given: The diameter of the giant cloud is d = 73 Pc. The time taken by the shock wave to pass…
Q: A giant molecular cloud is 30 pc in diameter and has a density of 339 hydrogen molecules/cm^3. What…
A: Concept used: Mass is found by multiplying by density and volume of sphere.
Q: Stars in the outskirts of a globular cluser are about 43 light years from the cluster's center, and…
A: Answer: Detail solution in below.
Q: You observe a spectral line from an emission nebula at a wavelength of 723 x 10-9 m. If you are…
A:
Q: If a giant molecular floyd is 73 pc in diameter and a shock wave can sweep through it in 9 million…
A:
Q: The formation of the first high-mass stars in a collapsing cloud tends to inhibit further star…
A: Stars are formed from the interstellar medium. The interstellar medium is made of clouds of gas and…
Q: A typical dense core of an interstellar gas cloud has a diameter of 0.2 pc and a mass of 2 solar…
A: The diameter of the gas cloud is defined as 0.2 pc. Therefore, the radius of the gas cloud will be…
Q: If a giant molecular cloud is 60 pc in diameter and a shock wave can sweep through it in 3 million…
A: Given the diameter of a giant molecular cloud is d = 60 pc (Parsec) time taken to sweep the cloud is…
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: If interstellar dust makes an RR Lyrae variable star look 2 magnitudes fainter than the star should,…
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: If you assume that a globular cluster 6 arc minutes in diameter is actually 18 pc In diameter, how…
A:
Q: If a contracting protostar is three times the radius of the Sun and has a temperature of only 3000 K…
A:
Q: If we look at a cluster featruing a lot of ble stars, we know the cluster is young. How do we know…
A: Generally stars that can be seen by the naked eye, tend to be greater in diameter and shine more…
Q: If interstellar dust makes an RR Lyrae variable star look 5 magnitude fainter than the star should,…
A: Given the magnitude get fainter by 5. Therefore,
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 a globular cluster contains 2 million stars and is 28 pc in diameter, what is the average…
A: This problem can be solved by first calculating the average volume reserved for one star and then…
Q: Consider two different clusters with approximately the same turnoff luminosity. Cluster A has a main…
A: Given two clusters A and B on the H-R diagram (which is a plot between the luminosity and…
Q: If you assume that a globular cluster 2 arc minutes in diameter is actually 19 pc in diameter, how…
A: Given, a globular disc cluster is 2 arc minutes in diameter. The actual diameter is d = 19 pc let D…
Q: Suppose you observe a star orbiting the galactic center at a speed of 1100 km/s in a circular orbit…
A:
Q: A giant molecular cloud is 30 pc in diameter and has a density of 330 hydrogen molecules/cm^3. What…
A:
Q: If a contracting protostar is eight times the radius of the Sun and has a temperature of only 2190…
A: The relation between the radius and luminosity of two stars is as follows: LLSun=RRSun2TTSun4…
Q: Observations show that the gas ejected from SN 1987A is moving at about 10,000 km/s. How long will…
A:
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: When a region of a molecular cloud collapses, a protostar is formed. How do the temperature and…
A: Protostars form primarily in the spiral arms of galaxies in the modern era, which spans at least the…
Q: If a contracting protostar is 0.5 times as luminous as the Sun and has a temperature of only 1,500…
A:
Q: Calculate the proper motion (in arc seconds per year) of a globular cluster with a transverse…
A: Solution -
Q: Protostar
A: Protostar is
Q: you assume that a globular cluster 4 arc minutes in diameter is actually 27 pc in diameter, how far…
A:
Q: Extinction dims starlight by about 1 magnitude per 1,000 pc. If one out of every 10,000 photons…
A: A photon is a type of elementary particle. It is the quantum of the electromagnetic field, which…
Q: A planetary nebula expanded in radius 0.2 arc seconds in 10 years. Doppler measurements show the…
A:
Q: What temperature would interstellar dust have to have to radiate most strongly at 100 micro meter?
A: When stars die they will slowly send out their outer layers. This forms large clouds of dust and is…
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: 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: If the RR lyrae stars in a globular cluster have average apparent magnitudes of +15, how far away…
A: The apparent magnitude (mv) of the given star is 15. The absolute magnitude (Mv) of a given star is…
If you assume that a globular cluster 2 arc minutes in diameter is actually 27 pc in diameter, how far away is it? (Hint: Use the small-angle formula.)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps