Term
| When all the nuclear fuel in a star is used up, what wins over the pressure and what happens to the star? |
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Definition
| gravity wins over pressure; the star dies |
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Term
| What do high-mass stars die in? |
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Definition
| a supernova (gigantic explosion) |
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Term
| What do less-mass stars die in? |
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Definition
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Term
| What do sun-like stars form a degenerate core of? |
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Definition
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Term
| Where do stars constantly lose their mass? |
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Definition
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Term
| What is the "final breath" of a sun-like star called? |
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Definition
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Term
| Red dwarves are hot enough to ignite helium burning, true or false? |
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Definition
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Term
| When a sun-like star builds up a big enough C-O core, what happens? Whats it called? |
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Definition
| core collapses and matter becomes degenerate...called a white dwarf |
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Term
| White dwarves are extremely dense. True or false |
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Definition
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Term
| Where are white dwarves found in the H-R diagram? |
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Definition
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Term
| White dwarves have (high/low) luminosity and (high/low) temperature. |
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Definition
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Term
| The more massive a white dwarf is, is it smaller or larger? |
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Definition
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Term
| What is the max. solar mass for a white dwarf? |
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Definition
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Term
| In a binary system, stars control a finite region of space bounded by what? |
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Definition
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Term
| What does matter form as it falls onto a white dwarf? |
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Definition
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Term
| When enough matter falls onto a white dwarf, it can ignite Hydrogen and cause what? |
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Definition
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Term
| When will the sun expand into a red giant? |
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Definition
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Term
| Why will earth be incinerated when the sun becomes a red giant? |
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Definition
| the earth's radius will be equalivalent to the expansion of sun |
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Term
| What will the core of the sun become at the end of its life? |
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Definition
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Term
| What kind of lives do high mass stars live? |
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Definition
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Term
| When the core of a massive star fills with iron, what happens? |
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Definition
| core collapses and starts a supernova |
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Term
| what type of supernova is the collapse of a massive star? |
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Definition
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Term
| What type of supernova is it when a white dwarf collects too much mass and collapses? |
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Definition
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Term
| After a supernova, what is the ejected material known as? |
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Definition
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Term
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Definition
| the shock of supernova remnants that accelerate protons and electrons to high energies |
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Term
| Stars with less that 3 solar masses are completely what? |
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Definition
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Term
| What are lagrange points? |
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Definition
| points of stability where matter can remain without being pulled towards a star |
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Term
| How does matter flow from one star to another? |
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Definition
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Term
| What is type I and type II? |
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Definition
Type I: no hydrogen lines in spectrum
TYPE II: has hydrogen lines |
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Term
| What kind of star is the sun? |
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Definition
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Term
| What do white dwarves eventually become? |
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Definition
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Term
| What is another name for white dwarves and why are they called that? |
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Definition
| Compact objects, because they are small, dense and generate no fusion energy |
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Term
| What is the surface of Roche lobes called? |
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Definition
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Term
| What is the Algol paradox? |
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Definition
| where some stars have a more massive star than its giant companion |
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Term
| For a star to die as a white dwarf, how many solar masses must it have? |
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Definition
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Term
| What is carbon deflagration? |
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Definition
| when a white dwarf pushes it over 8 masses and it collapses due to overdose of carbon |
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Term
| What is a Type Ib supernova? |
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Definition
| when a massive star loses its outer layers of hydrogen in a binary system |
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Term
| What is the hazy glow of the Crab Nebula produced by? |
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Definition
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