21st Century Astronomy
21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 16.5, Problem 16.5CYU
To determine

The time at which the white dwarf will become a supernova.

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fill in missing word a) One difference between a type I and type II supernova is the formation of the element  _________ in the core that produces a type II supernova b) The Chandrasekhar limit of a star (1.4 solar masses) is the mass limit above which a star cannot remain stable as a ________ ________. c) The temperature of a red giant star is ____________ than it was when the star was a dwarf.
A Type Ia Supernova is an example of a:
Which of the following is least reasonable regarding novae and supernovae? Group of answer choices   A type I (carbon-detonation) supernova results when a white dwarf in a binary system absorbs enough mass from its companion to push it over the Chandrasekhar limit.   A type II supernova results from any supermassive star at the end of its life, when it runs out of fusion energy and collapses.   A nova can occur multiple times in a binary system.   If a white dwarf in a binary system absorbs enough mass to go beyond the Chandrasekhar limit, the white dwarf explodes as a supernova.   The reason a type I supernova does not produce hydrogen lines is that the explosion originates from a stellar core (white dwarf), where hydrogen has already fused to produce heavier elements (so there is no longer any hydrogen).   More supernovae are observed in the Milky Way because they are much closer to us than those in other galaxies.
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