Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 20, Problem 60Q
To determine
The cause of thermonuclear supernova. The way, it can be compared with a core-collapse supernova.
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Why does a type Ia supernova explode? in two sentences.
Explain what makes the planetary nebula glow and what makes the supernova remnant glow. Which of these two kinds of gas clouds continues to glow for a longer time and why?
Indicate whether the following are properties of Type Ia or Type II supernovae.
(Select 1-Type Ia, 2-Type II. If the first is 1 and the rest 2, enter
12222222).
A) Produces very heavy elements like Uranium during the explosion.
B) Can occur in a very old star cluster.
C) Supernovae of this type have the same peak luminosity.
D) Could completely explode and leave no remnant behind.
E) Can only occur in a binary system.
F) The spectrum shows very little Hydrogen.
G) Caused by a white dwarf exceeding the Chandrasekhar mass limit.
Chapter 20 Solutions
Universe: Stars And Galaxies
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- Describe each of the following in detail, indicating their respective origins and the differences between them: Nova, Supernova type 1, Supernova type II.arrow_forward1. The neutrino flux from SN 1987A was estimated to be 1.3 x 1014 m-2 at the location of Earth. If the average energy per neutrino was approximately 4.2 MeV, estimate the total amount of energy in joules released via neutrinos during the supernova explosion. (SN 1987A was located in the LMC at a distance of 50 kpc.).arrow_forward(a)What type of supernova is most luminous in light? (b) What kind of star results in such an explosion? (c) What type of supernova is most luminous in neutrino emission? (d) What kind of star results in such an explosion?arrow_forward
- How would the spectra of a type II supernova be different from a type Ia supernova? Hint: Consider the characteristics of the objects that are their source.arrow_forwardHow do the two types of supernovae discussed in this chapter differ? What kind of star gives rise to each type?arrow_forwardA supernova can eject material at a velocity of 10,000 km/s. How long would it take a supernova remnant to expand to a radius of 1 AU? How long would it take to expand to a radius of 1 light-years? Assume that the expansion velocity remains constant and use the relationship: expansiontime=distanceexpansionvelocity .arrow_forward
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