Observations of the Crab Nebula taken aver several decades show that gas blobs that are now 100 arcseconds from the center of the nebula are moving away from the center by about 0.11 arcsecond per year.
Q: What is an emission nebula?
A: The space between stars and galaxies is filled with clouds of gas and dust. These clouds of gas and…
Q: More massive stars form more rapidly. (T/F)
A: Stars are formed from the interstellar medium. The interstellar medium contains hydrogen and helium…
Q: The expanding bubble of hot gas shown in the figure, which has been inflated by the light from a…
A:
Q: All of the single red-dwarf stars that ever formed are still on the main sequence today. (T/F)
A: Main sequence stars are those which are fusing hydrogen to helium in their cores. Almost 90% of the…
Q: Which stars are associated with a planetary nebula? black holes, neutron star's, white dwarf or main…
A: Required : What are planetary nebula associated with.
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 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: 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: 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: How many parsecs are there in 212 light-years?
A: We know that 1 light year = 0.3066 parsecs
Q: a supernova remnant is now 2.95 pc in radius and is expanding at 3,850 km/s. approximately how many…
A: Given information: The radius of the supernova remnant (D) = 2.95 pc = 2.95 (3.1×1013 km) = 9.145…
Q: If the Sun is 4.6 billion years old, how many times has it orbited the Milky Way galaxy? (The Sun is…
A: Given: Sun is 4.6 billion years old Distance from the center of Milky way, r=8300 pc Speed of Sun…
Q: If a star 10 parsecs away from us was moved and appeared to be 4 times brighter after movement, how…
A: Given, d=10 parsecs
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: If a super nova has an absolute magnitude of -20 and a distance of 10 million parsecs calculate the…
A: Detailed solution is given below:
Q: Two treads balls with masses 2 kilogram and three kilograms are suspended on threads of 70…
A:
Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…
A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…
Q: State three differences between the elliptic galaxy and the spiral galaxy.
A: Elliptic galaxy : the shape of elliptical galaxies are like a spheroid, or we say elongated sphere.…
Q: If an open cluster contains 450 stars and is 21 pc in diameter, what is the average distance between…
A: Given Number of stars in an open cluster (n) = 450 Diameter of the cluster Dclu = 21 pc…
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: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of the…
Q: What is the color of the stars shown on the diagram that have the lowest surface temperature? O red…
A: Required: Color of the stars,
Q: Sn1604 a supernova in the year 2000 the age then was 396 years calculate the speed of expansion of…
A: Sn1604 a supernova in the year 2000 the age then was 396 years.If Kepler’s supernova expanded ar…
Q: Use excel calculator to fill in the missing calculations. 1pc = 3.26 ly Galaxy Andromeda Large Mag.…
A: We need to complete the table in Excel. 1pc = 3.26 lyAlso, 1 ly=9.461e+12 km
Q: In which component of the interstellar medium do new stars form? O molecular clouds O HII Intercloud…
A: Interstellar medium is the medium between matter and radiation. The matter are gases (gas cloud),…
Q: A star orbiting Sagittarius A* is orbiting 970 AU from a 4 million MSun object. How fast (in km/s)…
A: The centripetal force is the force that keeps the planet or the star revolving around a central…
Q: mass
A: The evolution is affected by mass exchange in the binary. The higher mass Star use to be the lower…
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: If a contracting protostar is two times the radius of the Sun and has a temperature of only 1890 K,…
A:
Q: List the following 5 terms in order through a stars life cycle (starting with the sun), through the…
A: When a star like the Sun forms, it is hot and glows. This phase is called the red giant phase. After…
Q: If an open cluster contains 650 stars and is 27 pc in diameter, what is the average distance between…
A: Given, number of stars in cluster = 650 Diameter = 27 pc So volume of cluster = 43πD23 volume…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A supernova in a distant galaxy is observed to be having an absolute magnitude of -19 and an apparent magnitude of 17. Estimate the distance to the galaxy.If an open cluster contains 350 stars and is 48 pc in diameter, what is the average distance between the stars? On average what, share of the volume of the cluster surrounds each star?How is the blue color of a reflection nebula related to the blue color of the daytime sky?
- If a standard passenger aircraft can fly at 0.32 km/s (716 mph), how long (in yr) would it take to reach the sun? ______ yr How long (In yr) would it take to reach the galactic center? (Note: 1 pc = 3.1 x 10^13 km. The radius of the suns orbit around the galactic center is approximately 8,300 pc.) ______ yrwhy do dark streaks appear in visible light images of the Trifid nebula, but appear bright in an infared imageWhy are emission nebulae red ?
- Imagine that the Earth is orbiting a white dwarf star, whose surface temperature is 20000 K. What is the apparent angular size of this white dwarf as viewed from Earth? (Express your answer in arcseconds)Consider two stars on the main sequence, A and B. Star A has a mass of 6 M⊙. Star B has a mass of 0.3 M⊙. Compute the ratio of main sequence lifetimes for the two stars, TB/TA .Figure 2 shows the "rotation curve" of NGC 2742. It plots the “radial velocity (V)" (how fast material is moving either toward or away from us) that is measured for objects at different distances (R = radius") from the center of the galaxy. The center of the galaxy is at 0 kpc (kiloparsecs) with a speed of 9 km/sec away from us. (These velocities have been corrected for the observed tilt of the galaxy and represent true orbital velocities of the stars and gas.) 200 100 U4779 -100 As you can see, one side of the galaxy is moving with a negative velocity (spinning toward us), while the other side has a positive velocity (spinning away from us). Using Newton's gravity equation, we will be able to determine the gravitational mass of the entire galaxy and how the mass varies versus distance from the galaxy's center. -200 -8 8 -4 Radius (kpc) Read the following text carefully and follow the instructions: Select five radii spaced evenly from 0-10 kpc across the galaxy. Your selections should…
- If Hubble’s constant is taken to be 70 ??? ???, and a quasar is found to have a radial velocity equal to 95% of the speed of light, how far is the quasar in Mpc? (Hint: Use Hubble’s Law and solve for the distance; and the speed of light in vacuum is: ?=3.0×105 ??/?).Why is it that stars of greater mass (and thus possess more fuel for nuclear fusion) spend less time on the main sequence of the H-R diagram than their lower mass counterparts?